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Built 2026-10-19 (19 October 2026)

Niwai Threshold Days by Year (IN019250700)

4 fixed thresholds counted per year at Niwai (IN019250700): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Niwai Thresholds

  • Niwai: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 1945 with 29.
  • Niwai: days with 25 mm (0.98 in) or more of precipitation in 41 years, most in 1956 with 15.
  • Niwai: days with 50 mm (1.97 in) or more of precipitation in 34 years, most in 1933 with 6.
  • Niwai: days with 100 mm (3.94 in) or more of precipitation in 11 years, most in 1950 with 3.
  • 4 fixed thresholds have at least one qualifying day at Niwai.
41 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Niwai Days per year at Niwai with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 29 in 1945. 01020301929: 161930: 181931: 171932: 121933: 271934: 181935: 131936: 121937: 141938: 121939: 81940: 161941: 101942: 241943: 191944: 121945: 291946: 221947: 141948: 171949: 201950: 261951: 91952: 171953: 211954: 191955: 271956: 291957: 231958: 211959: 291960: 121961: 251962: 241963: 201964: 191965: 121966: 201968: 141969: 91970: 19192919341939194419491954195919641970
Days per year at Niwai with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 29 in 1945.
Days with 10 mm (0.39 in) or more of precipitation per year at Niwai
YearDaysDecade average
19291616
19301815.1
19311715.1
19321215.1
19332715.1
19341815.1
19351315.1
19361215.1
19371415.1
19381215.1
1939815.1
19401618.3
19411018.3
19422418.3
19431918.3
19441218.3
19452918.3
19462218.3
19471418.3
19481718.3
19492018.3
19502622.1
1951922.1
19521722.1
19532122.1
19541922.1
19552722.1
19562922.1
19572322.1
19582122.1
19592922.1
19601217.2
19612517.2
19622417.2
19632017.2
19641917.2
19651217.2
19662017.2
19681417.2
1969917.2
19701919
First to last qualifying date each year at Niwai For each year, a bar from the first to the last day at Niwai meeting 10 mm (0.39 in). 1929: 23 June 1929 to 20 December 19291930: 14 January 1930 to 31 October 19301931: 13 June 1931 to 28 September 19311932: 27 April 1932 to 8 September 19321933: 21 February 1933 to 25 September 19331934: 25 June 1934 to 27 December 19341935: 27 June 1935 to 18 September 19351936: 8 March 1936 to 12 September 19361937: 27 June 1937 to 16 September 19371938: 1 January 1938 to 26 August 19381939: 7 June 1939 to 24 October 19391940: 2 February 1940 to 25 August 19401941: 18 June 1941 to 19 September 19411942: 14 May 1942 to 3 September 19421943: 14 June 1943 to 14 September 19431944: 6 June 1944 to 5 October 19441945: 1 January 1945 to 25 September 19451946: 26 June 1946 to 13 September 19461947: 6 July 1947 to 25 September 19471948: 10 July 1948 to 25 September 19481949: 9 June 1949 to 29 September 19491950: 12 June 1950 to 19 September 19501951: 14 June 1951 to 22 August 19511952: 15 June 1952 to 25 August 19521953: 6 January 1953 to 4 October 19531954: 4 February 1954 to 5 October 19541955: 30 January 1955 to 5 October 19551956: 13 March 1956 to 9 December 19561957: 9 January 1957 to 13 September 19571958: 29 June 1958 to 25 September 19581959: 1 June 1959 to 14 September 19591960: 15 June 1960 to 28 August 19601961: 29 January 1961 to 26 September 19611962: 6 July 1962 to 4 December 19621963: 1 July 1963 to 14 September 19631964: 27 May 1964 to 3 September 19641965: 22 June 1965 to 18 October 19651966: 13 February 1966 to 9 September 19661968: 4 January 1968 to 21 August 19681969: 12 July 1969 to 17 August 19691970: 19 February 1970 to 13 September 19701929193519411947195319591965JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Niwai meeting 10 mm (0.39 in).
First to last qualifying date each year at Niwai
YearFirst dateLast date
19291929-06-231929-12-20
19301930-01-141930-10-31
19311931-06-131931-09-28
19321932-04-271932-09-08
19331933-02-211933-09-25
19341934-06-251934-12-27
19351935-06-271935-09-18
19361936-03-081936-09-12
19371937-06-271937-09-16
19381938-01-011938-08-26
19391939-06-071939-10-24
19401940-02-021940-08-25
19411941-06-181941-09-19
19421942-05-141942-09-03
19431943-06-141943-09-14
19441944-06-061944-10-05
19451945-01-011945-09-25
19461946-06-261946-09-13
19471947-07-061947-09-25
19481948-07-101948-09-25
19491949-06-091949-09-29
19501950-06-121950-09-19
19511951-06-141951-08-22
19521952-06-151952-08-25
19531953-01-061953-10-04
19541954-02-041954-10-05
19551955-01-301955-10-05
19561956-03-131956-12-09
19571957-01-091957-09-13
19581958-06-291958-09-25
19591959-06-011959-09-14
19601960-06-151960-08-28
19611961-01-291961-09-26
19621962-07-061962-12-04
19631963-07-011963-09-14
19641964-05-271964-09-03
19651965-06-221965-10-18
19661966-02-131966-09-09
19681968-01-041968-08-21
19691969-07-121969-08-17
19701970-02-191970-09-13

Every Fixed Threshold

Fixed thresholds at Niwai
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4129194519
25 mm (0.98 in): Days with 25 mm or more rain411519569
50 mm (1.97 in): Days with 50 mm or more rain34619332
100 mm (3.94 in): Days with 100 mm or more rain11319502

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1929.

Download the Data

  • Data for Niwai 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 . Last revised (2025-12-31).