Tamanrasset Weather Records (AG000060680)

Record envelope, standing records and threshold days for Tamanrasset (AG000060680), Algeria, with 65 years of record.

Key Facts for Tamanrasset

Tamanrasset (AG000060680) is a weather station in Algeria at 22.80 latitude and 5.43 longitude, 1,362 m (4,469 ft) above sea level.
The station reports from 1940 to 2004, 65 years of record.
1,464 records set at Tamanrasset still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Tamanrasset set a daily record high minimum temperature of 12.5 C (54.5 F) on 27 December 2004.

About the Station

Location: Algeria, 22.80 latitude, 5.43 longitude.
Elevation: 1,362 m (4,469 ft).
Period of record: 1940 to 2004, 65 years.
Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Tamanrasset. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Tamanrasset, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	28.2 C (82.8 F)	-5.0 C (23.0 F)	n/a	n/a
Feb	30.2 C (86.4 F)	-4.7 C (23.5 F)	n/a	n/a
Mar	33.0 C (91.4 F)	-1.0 C (30.2 F)	n/a	n/a
Apr	36.7 C (98.1 F)	2.5 C (36.5 F)	n/a	n/a
May	38.5 C (101.3 F)	7.0 C (44.6 F)	n/a	n/a
Jun	39.6 C (103.3 F)	14.9 C (58.8 F)	n/a	n/a
Jul	40.0 C (104.0 F)	13.2 C (55.8 F)	n/a	n/a
Aug	41.0 C (105.8 F)	16.2 C (61.2 F)	n/a	n/a
Sep	37.3 C (99.1 F)	12.4 C (54.3 F)	n/a	n/a
Oct	40.3 C (104.5 F)	6.7 C (44.1 F)	n/a	n/a
Nov	31.1 C (88.0 F)	-1.0 C (30.2 F)	n/a	n/a
Dec	31.7 C (89.1 F)	-4.5 C (23.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Tamanrasset still stand. 1988 holds the most, with 54.

Standing records at Tamanrasset by the year they were set
Year set	Standing records
1940	21
1941	35
1942	31
1943	34
1944	24
1945	26
1946	19
1947	21
1948	22
1949	19
1950	16
1951	24
1952	28
1953	24
1954	22
1955	5
1956	10
1957	36
1958	25
1959	11
1960	17
1961	16
1962	24
1963	32
1964	17
1965	30
1966	8
1967	18
1968	16
1969	48
1970	15
1971	19
1972	12
1973	22
1974	16
1975	18
1976	21
1977	16
1978	11
1979	26
1980	22
1981	20
1982	10
1983	23
1984	23
1985	14
1986	20
1987	13
1988	54
1989	15
1990	15
1991	20
1992	26
1993	15
1994	20
1995	41
1996	29
1997	22
1998	50
1999	18
2000	27
2001	19
2002	34
2003	35
2004	24

All-Time Record Progression

8 new records

8 all-time records were set at Tamanrasset between 29 June 1979 and 26 January 2003. Each dot is a new record.

When Tamanrasset set new all-time records
Date	Kind	Detail
1979-06-29	Record high maximum temperature	Record high maximum temperature 39.4 C (102.9 F)
1981-07-20	Record high minimum temperature	Record high minimum temperature 28.7 C (83.7 F)
1982-08-01	Record high minimum temperature	Record high minimum temperature 29.5 C (85.1 F)
1986-06-17	Record high maximum temperature	Record high maximum temperature 39.6 C (103.3 F)
1987-07-19	Record high maximum temperature	Record high maximum temperature 40.0 C (104.0 F)
1997-06-30	Record high minimum temperature	Record high minimum temperature 29.8 C (85.6 F)
1999-08-20	Record high maximum temperature	Record high maximum temperature 41.0 C (105.8 F)
2003-01-26	Record low minimum temperature	Record low minimum temperature -5.0 C (23.0 F)

Wettest Day of Each Month

Sep: 44.0 mm (1.7 in)

The wettest day on record for each calendar month at Tamanrasset. The most was 44.0 mm (1.7 in) on 13 September 1950.

Record daily precipitation for each month at Tamanrasset
Month	Record daily precipitation (mm)	Date
Jan	12.0 mm (0.5 in)	2 January 1976
Feb	12.0 mm (0.5 in)	2 February 1946
Mar	41.0 mm (1.6 in)	4 March 1988
Apr	20.0 mm (0.8 in)	27 April 1955
May	35.0 mm (1.4 in)	31 May 1979
Jun	25.0 mm (1.0 in)	6 June 1954
Jul	26.0 mm (1.0 in)	11 July 1990
Aug	35.0 mm (1.4 in)	18 August 1953
Sep	44.0 mm (1.7 in)	13 September 1950
Oct	33.0 mm (1.3 in)	16 October 1994
Nov	29.0 mm (1.1 in)	25 November 1958
Dec	21.0 mm (0.8 in)	6 December 1955

Period of Record Coverage

1940 to 2004

65 years of record at Tamanrasset, 1940 to 2004. 5 years have data for under 90 percent of days and are left out of rankings: 1940, 1999, 2000, 2001, 2003.

Days with data per year at Tamanrasset
Year	Days with data	Share of year	Complete
1940	320	87%	No
1941	365	100%	Yes
1942	365	100%	Yes
1943	362	99%	Yes
1944	365	100%	Yes
1945	364	100%	Yes
1946	358	98%	Yes
1947	339	93%	Yes
1948	360	98%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	353	96%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	364	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	364	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	364	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	341	93%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	365	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	365	100%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	302	83%	No
2000	315	86%	No
2001	300	82%	No
2002	330	90%	Yes
2003	327	90%	No
2004	344	94%	Yes

Latest Records

Latest records at Tamanrasset
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 December 2004	Tamanrasset, DZ	daily high min	12.5 C (54.5 F)	0.4 C (0.7 F)	31 years	16 of 100 (Routine)
25 December 2004	Tamanrasset, DZ	daily high min	14.0 C (57.2 F)	1.1 C (2.0 F)	31 years	18 of 100 (Routine)
24 December 2004	Tamanrasset, DZ	daily high max	25.5 C (77.9 F)	0.5 C (0.9 F)	3 years	7 of 100 (Routine)
23 November 2004	Tamanrasset, DZ	daily high min (Tie)	15.0 C (59.0 F)	tie	62 years	6 of 100 (Routine)
3 November 2004	Tamanrasset, DZ	daily low min	7.1 C (44.8 F)	0.9 C (1.6 F)	6 years	10 of 100 (Routine)
15 August 2004	Tamanrasset, DZ	daily high min	26.2 C (79.2 F)	0.1 C (0.2 F)	21 years	12 of 100 (Routine)
14 August 2004	Tamanrasset, DZ	daily high max	37.6 C (99.7 F)	0.3 C (0.5 F)	7 years	10 of 100 (Routine)
24 July 2004	Tamanrasset, DZ	daily rain	4.1 mm (0.16 in)	3.1 mm (0.12 in)	23 years	17 of 100 (Routine)
17 July 2004	Tamanrasset, DZ	daily high min	26.8 C (80.2 F)	0.7 C (1.3 F)	62 years	27 of 100 (Routine)
14 July 2004	Tamanrasset, DZ	daily high min	26.8 C (80.2 F)	0.3 C (0.5 F)	3 years	7 of 100 (Routine)
21 June 2004	Tamanrasset, DZ	daily low min	17.0 C (62.6 F)	2.3 C (4.1 F)	42 years	27 of 100 (Routine)
20 June 2004	Tamanrasset, DZ	daily low min	17.0 C (62.6 F)	1.1 C (2.0 F)	54 years	26 of 100 (Routine)
13 June 2004	Tamanrasset, DZ	daily rain (Tie)	1.0 mm (0.04 in)	tie	59 years	5 of 100 (Routine)
16 May 2004	Tamanrasset, DZ	daily high min	24.4 C (75.9 F)	0.2 C (0.4 F)	8 years	8 of 100 (Routine)
15 May 2004	Tamanrasset, DZ	daily high min	25.5 C (77.9 F)	1.9 C (3.4 F)	17 years	17 of 100 (Routine)
15 April 2004	Tamanrasset, DZ	daily high min	22.5 C (72.5 F)	0.5 C (0.9 F)	23 years	13 of 100 (Routine)
14 April 2004	Tamanrasset, DZ	daily high min	22.6 C (72.7 F)	1.1 C (2.0 F)	46 years	21 of 100 (Routine)
29 March 2004	Tamanrasset, DZ	daily high min	18.8 C (65.8 F)	1.0 C (1.8 F)	22 years	14 of 100 (Routine)
28 March 2004	Tamanrasset, DZ	daily high min	20.3 C (68.5 F)	0.9 C (1.6 F)	17 years	13 of 100 (Routine)
5 March 2004	Tamanrasset, DZ	daily low min	0.0 C (32.0 F)	0.4 C (0.7 F)	60 years	25 of 100 (Routine)

Climate Trend

62 complete years, 1941 to 2004

One stripe for each of 62 complete years at Tamanrasset, 1941 to 2004. Blue stripes are years cooler than the station's own mean of 21.7 C (71.0 F); red stripes are warmer. The coolest year was 1950, at 20.5 C (68.9 F), and the warmest was 1998, at 22.7 C (72.8 F). The strongest colour marks a difference of 1.2 C (2.2 F).

Annual mean temperature at Tamanrasset as warming stripes, 1941 to 2004
Year	Annual mean temperature	Difference from the station mean
1941	22.4 C	+0.78 C
1942	21.7 C	+0.00 C
1943	21.2 C	-0.45 C
1944	21.2 C	-0.45 C
1945	21.1 C	-0.52 C
1946	21.3 C	-0.32 C
1948	20.8 C	-0.85 C
1949	21.3 C	-0.32 C
1950	20.5 C	-1.16 C
1951	22.0 C	+0.32 C
1952	21.1 C	-0.53 C
1953	21.5 C	-0.20 C
1954	21.1 C	-0.55 C
1955	21.7 C	-0.01 C
1956	21.1 C	-0.59 C
1957	21.1 C	-0.55 C
1958	21.9 C	+0.21 C
1959	22.0 C	+0.32 C
1960	21.5 C	-0.19 C
1961	21.1 C	-0.52 C
1962	21.4 C	-0.22 C
1963	21.7 C	+0.00 C
1964	21.2 C	-0.49 C
1965	21.4 C	-0.24 C
1966	21.9 C	+0.26 C
1967	21.4 C	-0.23 C
1968	21.5 C	-0.18 C
1969	22.7 C	+0.99 C
1970	22.0 C	+0.38 C
1971	21.8 C	+0.11 C
1972	21.5 C	-0.16 C
1973	21.5 C	-0.15 C
1974	20.8 C	-0.88 C
1975	21.0 C	-0.68 C
1976	20.9 C	-0.72 C
1977	21.9 C	+0.25 C
1978	22.0 C	+0.31 C
1979	21.9 C	+0.19 C
1980	21.9 C	+0.21 C
1981	21.8 C	+0.15 C
1982	21.3 C	-0.39 C
1983	21.9 C	+0.27 C
1984	21.6 C	-0.10 C
1985	21.6 C	-0.06 C
1986	21.9 C	+0.27 C
1987	22.5 C	+0.87 C
1988	22.4 C	+0.74 C
1989	21.7 C	-0.01 C
1990	22.2 C	+0.54 C
1991	21.7 C	+0.02 C
1992	21.0 C	-0.71 C
1993	21.4 C	-0.23 C
1994	21.3 C	-0.36 C
1995	21.9 C	+0.28 C
1996	22.3 C	+0.59 C
1997	22.0 C	+0.32 C
1998	22.7 C	+0.99 C
2000	22.0 C	+0.29 C
2001	22.4 C	+0.69 C
2002	22.6 C	+0.95 C
2003	22.5 C	+0.85 C
2004	22.4 C	+0.75 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1941 to 2004. In Fahrenheit: 0.3 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 62 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Tamanrasset
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.1 C (0.1 to 0.2) per decade	0.3 F (0.1 to 0.4) per decade	1941 to 2004	62	Rise
Mean daily maximum	0.1 C (0.1 to 0.2) per decade	0.2 F (0.1 to 0.4) per decade	1941 to 2004	62	Rise
Mean daily minimum	0.1 C (0.1 to 0.2) per decade	0.3 F (0.1 to 0.4) per decade	1941 to 2004	62	Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1940 to 2004

Yearly extremes at Tamanrasset: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.0 C (105.8 F)	1999	38.0 C (100.4 F)	65
Coldest night (TNn)	-5.0 C (23.0 F)	2003	-1.4 C (29.5 F)	65
Wettest day (Rx1day)	44.0 mm (1.7 in)	1950	14.0 mm (0.6 in)	65
Wettest five days (Rx5day)	74.0 mm (2.9 in)	1951	15.0 mm (0.6 in)	65
Longest dry spell (CDD)	235 days	1946	80 days	65

Hottest day (TXx)

The hottest day of the year at Tamanrasset, 1940 to 2004. The record is 41.0 C (105.8 F) in 1999, marked on the chart; the median year is 38.0 C (100.4 F).

Hottest day (TXx) at Tamanrasset by year
Year	Hottest day (TXx)
1940	38.7 C (101.7 F)
1941	38.0 C (100.4 F)
1942	38.3 C (100.9 F)
1943	37.2 C (99.0 F)
1944	38.9 C (102.0 F)
1945	38.4 C (101.1 F)
1946	38.0 C (100.4 F)
1947	37.8 C (100.0 F)
1948	36.9 C (98.4 F)
1949	37.0 C (98.6 F)
1950	36.5 C (97.7 F)
1951	37.3 C (99.1 F)
1952	37.6 C (99.7 F)
1953	37.6 C (99.7 F)
1954	37.3 C (99.1 F)
1955	37.1 C (98.8 F)
1956	36.4 C (97.5 F)
1957	35.8 C (96.4 F)
1958	37.8 C (100.0 F)
1959	37.6 C (99.7 F)
1960	36.7 C (98.1 F)
1961	38.0 C (100.4 F)
1962	37.9 C (100.2 F)
1963	38.0 C (100.4 F)
1964	37.5 C (99.5 F)
1965	37.0 C (98.6 F)
1966	38.2 C (100.8 F)
1967	37.9 C (100.2 F)
1968	37.2 C (99.0 F)
1969	37.9 C (100.2 F)
1970	38.7 C (101.7 F)
1971	37.0 C (98.6 F)
1972	37.9 C (100.2 F)
1973	38.0 C (100.4 F)
1974	37.4 C (99.3 F)
1975	37.5 C (99.5 F)
1976	37.0 C (98.6 F)
1977	38.6 C (101.5 F)
1978	38.5 C (101.3 F)
1979	39.4 C (102.9 F)
1980	38.7 C (101.7 F)
1981	36.7 C (98.1 F)
1982	36.6 C (97.9 F)
1983	38.1 C (100.6 F)
1984	37.5 C (99.5 F)
1985	37.8 C (100.0 F)
1986	39.6 C (103.3 F)
1987	40.0 C (104.0 F)
1988	39.6 C (103.3 F)
1989	37.9 C (100.2 F)
1990	38.4 C (101.1 F)
1991	38.6 C (101.5 F)
1992	38.8 C (101.8 F)
1993	38.1 C (100.6 F)
1994	37.0 C (98.6 F)
1995	38.6 C (101.5 F)
1996	38.2 C (100.8 F)
1997	38.7 C (101.7 F)
1998	38.6 C (101.5 F)
1999	41.0 C (105.8 F)
2000	39.6 C (103.3 F)
2001	39.2 C (102.6 F)
2002	38.5 C (101.3 F)
2003	38.2 C (100.8 F)
2004	38.0 C (100.4 F)

Coldest night (TNn)

The coldest night of the year at Tamanrasset, 1940 to 2004. The record is -5.0 C (23.0 F) in 2003, marked on the chart; the median year is -1.4 C (29.5 F).

Coldest night (TNn) at Tamanrasset by year
Year	Coldest night (TNn)
1940	-2.1 C (28.2 F)
1941	0.0 C (32.0 F)
1942	-2.4 C (27.7 F)
1943	-1.1 C (30.0 F)
1944	-4.7 C (23.5 F)
1945	-1.4 C (29.5 F)
1946	-4.0 C (24.8 F)
1947	-4.0 C (24.8 F)
1948	-2.2 C (28.0 F)
1949	-3.1 C (26.4 F)
1950	-2.0 C (28.4 F)
1951	-1.2 C (29.8 F)
1952	-2.6 C (27.3 F)
1953	-3.8 C (25.2 F)
1954	-0.9 C (30.4 F)
1955	-1.5 C (29.3 F)
1956	-1.4 C (29.5 F)
1957	-1.4 C (29.5 F)
1958	-1.8 C (28.8 F)
1959	0.0 C (32.0 F)
1960	-4.5 C (23.9 F)
1961	-0.8 C (30.6 F)
1962	-1.8 C (28.8 F)
1963	1.1 C (34.0 F)
1964	-2.3 C (27.9 F)
1965	-2.0 C (28.4 F)
1966	2.0 C (35.6 F)
1967	-0.4 C (31.3 F)
1968	-1.1 C (30.0 F)
1969	2.0 C (35.6 F)
1970	1.2 C (34.2 F)
1971	-1.3 C (29.7 F)
1972	-2.0 C (28.4 F)
1973	-0.5 C (31.1 F)
1974	-0.9 C (30.4 F)
1975	-4.2 C (24.4 F)
1976	0.5 C (32.9 F)
1977	1.2 C (34.2 F)
1978	-0.6 C (30.9 F)
1979	-0.2 C (31.6 F)
1980	-3.2 C (26.2 F)
1981	-3.8 C (25.2 F)
1982	-2.0 C (28.4 F)
1983	1.1 C (34.0 F)
1984	-2.3 C (27.9 F)
1985	-4.3 C (24.3 F)
1986	-1.0 C (30.2 F)
1987	-1.0 C (30.2 F)
1988	-1.2 C (29.8 F)
1989	0.1 C (32.2 F)
1990	-1.7 C (28.9 F)
1991	-1.4 C (29.5 F)
1992	-0.6 C (30.9 F)
1993	-2.0 C (28.4 F)
1994	-0.9 C (30.4 F)
1995	-3.3 C (26.1 F)
1996	1.4 C (34.5 F)
1997	0.8 C (33.4 F)
1998	-1.0 C (30.2 F)
1999	-1.6 C (29.1 F)
2000	-1.2 C (29.8 F)
2001	0.7 C (33.3 F)
2002	-3.8 C (25.2 F)
2003	-5.0 C (23.0 F)
2004	-1.0 C (30.2 F)

Wettest day (Rx1day)

The wettest day of the year at Tamanrasset, 1940 to 2004. The record is 44.0 mm (1.7 in) in 1950, marked on the chart; the median year is 14.0 mm (0.6 in).

Wettest day (Rx1day) at Tamanrasset by year
Year	Wettest day (Rx1day)
1940	27.0 mm (1.1 in)
1941	8.0 mm (0.31 in)
1942	6.0 mm (0.24 in)
1943	17.0 mm (0.7 in)
1944	12.0 mm (0.5 in)
1945	17.0 mm (0.7 in)
1946	12.0 mm (0.5 in)
1947	12.0 mm (0.5 in)
1948	12.0 mm (0.5 in)
1949	3.0 mm (0.12 in)
1950	44.0 mm (1.7 in)
1951	32.0 mm (1.3 in)
1952	23.0 mm (0.9 in)
1953	35.0 mm (1.4 in)
1954	25.0 mm (1.0 in)
1955	21.0 mm (0.8 in)
1956	10.0 mm (0.4 in)
1957	16.0 mm (0.6 in)
1958	29.0 mm (1.1 in)
1959	5.0 mm (0.20 in)
1960	16.0 mm (0.6 in)
1961	2.0 mm (0.08 in)
1962	11.0 mm (0.4 in)
1963	21.0 mm (0.8 in)
1964	3.0 mm (0.12 in)
1965	25.0 mm (1.0 in)
1966	17.0 mm (0.7 in)
1967	19.0 mm (0.7 in)
1968	16.0 mm (0.6 in)
1969	26.0 mm (1.0 in)
1970	7.0 mm (0.28 in)
1971	3.0 mm (0.12 in)
1972	3.0 mm (0.12 in)
1973	0.0 mm (0.00 in)
1974	14.0 mm (0.6 in)
1975	16.0 mm (0.6 in)
1976	19.0 mm (0.7 in)
1977	2.0 mm (0.08 in)
1978	18.0 mm (0.7 in)
1979	40.0 mm (1.6 in)
1980	5.0 mm (0.20 in)
1981	25.0 mm (1.0 in)
1982	19.0 mm (0.7 in)
1983	11.0 mm (0.4 in)
1984	23.0 mm (0.9 in)
1985	8.0 mm (0.31 in)
1986	13.0 mm (0.5 in)
1987	14.0 mm (0.6 in)
1988	41.0 mm (1.6 in)
1989	6.0 mm (0.24 in)
1990	26.0 mm (1.0 in)
1991	12.0 mm (0.5 in)
1992	13.0 mm (0.5 in)
1993	13.0 mm (0.5 in)
1994	33.0 mm (1.3 in)
1995	20.0 mm (0.8 in)
1996	14.0 mm (0.6 in)
1997	14.0 mm (0.6 in)
1998	11.0 mm (0.4 in)
1999	0.0 mm (0.00 in)
2000	7.1 mm (0.28 in)
2001	0.8 mm (0.03 in)
2002	25.9 mm (1.0 in)
2003	20.1 mm (0.8 in)
2004	6.1 mm (0.24 in)

Wettest five days (Rx5day)

The wettest five days of the year at Tamanrasset, 1940 to 2004. The record is 74.0 mm (2.9 in) in 1951, marked on the chart; the median year is 15.0 mm (0.6 in).

Wettest five days (Rx5day) at Tamanrasset by year
Year	Wettest five days (Rx5day)
1940	22.0 mm (0.9 in)
1941	8.0 mm (0.31 in)
1942	6.0 mm (0.24 in)
1943	22.0 mm (0.9 in)
1944	14.0 mm (0.6 in)
1945	19.0 mm (0.7 in)
1946	15.0 mm (0.6 in)
1947	13.0 mm (0.5 in)
1948	15.0 mm (0.6 in)
1949	4.0 mm (0.16 in)
1950	44.0 mm (1.7 in)
1951	74.0 mm (2.9 in)
1952	36.0 mm (1.4 in)
1953	67.0 mm (2.6 in)
1954	26.0 mm (1.0 in)
1955	33.0 mm (1.3 in)
1956	10.0 mm (0.4 in)
1957	32.0 mm (1.3 in)
1958	33.0 mm (1.3 in)
1959	8.0 mm (0.31 in)
1960	11.0 mm (0.4 in)
1961	1.0 mm (0.04 in)
1962	11.0 mm (0.4 in)
1963	14.0 mm (0.6 in)
1964	3.0 mm (0.12 in)
1965	25.0 mm (1.0 in)
1966	17.0 mm (0.7 in)
1967	4.0 mm (0.16 in)
1968	24.0 mm (0.9 in)
1969	33.0 mm (1.3 in)
1970	8.0 mm (0.31 in)
1971	3.0 mm (0.12 in)
1972	8.0 mm (0.31 in)
1973	0.0 mm (0.00 in)
1974	15.0 mm (0.6 in)
1975	25.0 mm (1.0 in)
1976	35.0 mm (1.4 in)
1977	1.0 mm (0.04 in)
1978	10.0 mm (0.4 in)
1979	51.0 mm (2.0 in)
1980	5.0 mm (0.20 in)
1981	25.0 mm (1.0 in)
1982	31.0 mm (1.2 in)
1983	16.0 mm (0.6 in)
1984	3.0 mm (0.12 in)
1985	10.0 mm (0.4 in)
1986	15.0 mm (0.6 in)
1987	14.0 mm (0.6 in)
1988	51.0 mm (2.0 in)
1989	7.0 mm (0.28 in)
1990	5.0 mm (0.20 in)
1991	40.0 mm (1.6 in)
1992	18.0 mm (0.7 in)
1993	14.0 mm (0.6 in)
1994	41.0 mm (1.6 in)
1995	27.0 mm (1.1 in)
1996	15.0 mm (0.6 in)
1997	22.0 mm (0.9 in)
1998	11.0 mm (0.4 in)
1999	0.0 mm (0.00 in)
2000	0.0 mm (0.00 in)
2001	1.3 mm (0.05 in)
2002	32.2 mm (1.3 in)
2003	25.1 mm (1.0 in)
2004	8.1 mm (0.32 in)

Longest dry spell (CDD)

The longest dry spell of the year at Tamanrasset, 1940 to 2004. The record is 235 days in 1946, marked on the chart; the median year is 80 days.

Longest dry spell (CDD) at Tamanrasset by year
Year	Longest dry spell (CDD)
1940	121 days
1941	66 days
1942	82 days
1943	66 days
1944	146 days
1945	71 days
1946	235 days
1947	57 days
1948	116 days
1949	63 days
1950	100 days
1951	85 days
1952	87 days
1953	52 days
1954	45 days
1955	70 days
1956	65 days
1957	83 days
1958	154 days
1959	125 days
1960	83 days
1961	78 days
1962	56 days
1963	79 days
1964	88 days
1965	82 days
1966	83 days
1967	61 days
1968	50 days
1969	97 days
1970	141 days
1971	50 days
1972	60 days
1973	104 days
1974	86 days
1975	88 days
1976	55 days
1977	119 days
1978	62 days
1979	77 days
1980	81 days
1981	123 days
1982	45 days
1983	98 days
1984	84 days
1985	84 days
1986	104 days
1987	82 days
1988	54 days
1989	73 days
1990	80 days
1991	78 days
1992	95 days
1993	74 days
1994	88 days
1995	73 days
1996	70 days
1997	90 days
1998	150 days
1999	13 days
2000	4 days
2001	5 days
2002	26 days
2003	24 days
2004	67 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

58 years, 1941 to 2004

A day with at least 14.5 mm (0.6 in) of rain is expected about once in 2 years. A day with at least 48.0 mm (1.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Tamanrasset: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	14.5 mm (0.6 in)
5 years	23.8 mm (0.9 in)
10 years	29.9 mm (1.2 in)
25 years	37.3 mm (1.5 in)
50 years	42.7 mm (1.7 in)
100 years	48.0 mm (1.9 in)	Longer than the 58 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 58 years of values from 1941 to 2004.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 44.0 mm (1.7 in) in 1950; 41.0 mm (1.6 in) in 1988; 40.0 mm (1.6 in) in 1979.

Download the Data

Data for Tamanrasset standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tamanrasset threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).