Hamelin Pool Threshold Days by Year (ASN00006025)

13 fixed thresholds counted per year at Hamelin Pool (ASN00006025): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hamelin Pool Thresholds

Hamelin Pool: days with 10 mm (0.39 in) or more of precipitation in 85 years, most in 1927 with 14.
Hamelin Pool: days with 25 mm (0.98 in) or more of precipitation in 57 years, most in 1932 with 5.
Hamelin Pool: days with 50 mm (1.97 in) or more of precipitation in 24 years, most in 1915 with 2.
Hamelin Pool: nights with a minimum temperature at or above 20 C (68 F) in 21 years, most in 1978 with 101.
13 fixed thresholds have at least one qualifying day at Hamelin Pool.

Days at or above 30 C (86 F)

20 years with a qualifying day

Days per year at Hamelin Pool with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 188 in 1969.

Days at or above 30 C (86 F) per year at Hamelin Pool
Year	Days	Decade average
1957	182	172
1958	163	172
1959	171	172
1960	167	166.8
1961	160	166.8
1962	169	166.8
1963	173	166.8
1964	162	166.8
1965	159	166.8
1966	163	166.8
1967	179	166.8
1968	148	166.8
1969	188	166.8
1970	165	159.7
1972	184	159.7
1974	136	159.7
1975	141	159.7
1977	170	159.7
1978	174	159.7
1979	148	159.7

For each year, a bar from the first to the last day at Hamelin Pool meeting 30 C (86 F).

First to last qualifying date each year at Hamelin Pool
Year	First date	Last date
1957	1957-01-02	1957-12-31
1958	1958-01-01	1958-12-31
1959	1959-01-01	1959-12-29
1960	1960-01-02	1960-12-31
1961	1961-01-01	1961-12-31
1962	1962-01-01	1962-12-31
1963	1963-01-01	1963-12-31
1964	1964-01-01	1964-12-30
1965	1965-01-01	1965-12-31
1966	1966-01-01	1966-12-30
1967	1967-01-02	1967-12-29
1968	1968-01-01	1968-12-30
1969	1969-01-01	1969-12-31
1970	1970-01-01	1970-12-31
1972	1972-01-01	1972-12-31
1974	1974-01-02	1974-12-31
1975	1975-01-01	1975-12-31
1977	1977-01-01	1977-12-31
1978	1978-01-02	1978-12-31
1979	1979-01-01	1979-12-31

Every Fixed Threshold

Fixed thresholds at Hamelin Pool
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	20	188	1969	148
35 C (95 F): Days	20	114	1972	84
40 C (104 F): Days	20	45	1972	23
45 C (113 F): Days	17	7	1977	3
90 F (32.2 C): Days	20	154	1972	122
100 F (37.8 C): Days	20	73	1972	44
110 F (43.3 C): Days	19	12	1977	5
20 C (68 F): Tropical nights (min	21	101	1978	69
25 C (77 F): Days with min	21	34	1963	17
10 mm (0.39 in): Days with 10 mm or more rain	85	14	1927	3
25 mm (0.98 in): Days with 25 mm or more rain	57	5	1932	1
50 mm (1.97 in): Days with 50 mm or more rain	24	2	1915	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	2000	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1957.

Download the Data

Data for Hamelin Pool 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). Threshold counts are computed by this site.

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

Hamelin Pool Threshold Days by Year (ASN00006025)

Key Facts for Hamelin Pool Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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