Daily records
Page built 2026-10-18
Data as of 2025-12-31
Search
Built 2026-10-18 (18 October 2026)

Ambathala Head Station Threshold Days by Year

4 fixed thresholds counted per year at Ambathala Head Station (ASN00044092): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ambathala Head Station Thresholds

  • Ambathala Head Station: days with 10 mm (0.39 in) or more of precipitation in 23 years, most in 1921 with 26.
  • Ambathala Head Station: days with 25 mm (0.98 in) or more of precipitation in 23 years, most in 1921 with 11.
  • Ambathala Head Station: days with 50 mm (1.97 in) or more of precipitation in 16 years, most in 1918 with 4.
  • Ambathala Head Station: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1924 with 1.
  • 4 fixed thresholds have at least one qualifying day at Ambathala Head Station.
23 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Ambathala Head Station Days per year at Ambathala Head Station with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 26 in 1921. 01020301910: 191911: 131912: 131915: 81916: 241917: 181918: 171919: 91920: 211921: 261922: 51923: 131924: 181925: 141926: 81928: 141929: 71991: 131992: 131994: 111995: 111996: 161997: 1619101915191819211924192819921996
Days per year at Ambathala Head Station with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 26 in 1921.
Days with 10 mm (0.39 in) or more of precipitation per year at Ambathala Head Station
YearDaysDecade average
19101915.1
19111315.1
19121315.1
1915815.1
19162415.1
19171815.1
19181715.1
1919915.1
19202114
19212614
1922514
19231314
19241814
19251414
1926814
19281414
1929714
19911313.3
19921313.3
19941113.3
19951113.3
19961613.3
19971613.3
First to last qualifying date each year at Ambathala Head Station For each year, a bar from the first to the last day at Ambathala Head Station meeting 10 mm (0.39 in). 1910: 9 February 1910 to 10 December 19101911: 11 January 1911 to 7 December 19111912: 24 February 1912 to 24 December 19121915: 22 January 1915 to 26 December 19151916: 27 February 1916 to 31 December 19161917: 3 January 1917 to 22 November 19171918: 7 January 1918 to 31 December 19181919: 20 January 1919 to 21 December 19191920: 6 February 1920 to 30 December 19201921: 3 January 1921 to 26 December 19211922: 29 June 1922 to 21 December 19221923: 8 January 1923 to 28 December 19231924: 6 January 1924 to 13 December 19241925: 2 January 1925 to 12 December 19251926: 1 January 1926 to 27 November 19261928: 18 January 1928 to 14 December 19281929: 26 March 1929 to 9 November 19291991: 5 January 1991 to 11 December 19911992: 25 January 1992 to 20 December 19921994: 1 February 1994 to 30 November 19941995: 3 January 1995 to 1 December 19951996: 1 January 1996 to 18 December 19961997: 12 January 1997 to 29 December 199719101915191819211924192819921996JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ambathala Head Station meeting 10 mm (0.39 in).
First to last qualifying date each year at Ambathala Head Station
YearFirst dateLast date
19101910-02-091910-12-10
19111911-01-111911-12-07
19121912-02-241912-12-24
19151915-01-221915-12-26
19161916-02-271916-12-31
19171917-01-031917-11-22
19181918-01-071918-12-31
19191919-01-201919-12-21
19201920-02-061920-12-30
19211921-01-031921-12-26
19221922-06-291922-12-21
19231923-01-081923-12-28
19241924-01-061924-12-13
19251925-01-021925-12-12
19261926-01-011926-11-27
19281928-01-181928-12-14
19291929-03-261929-11-09
19911991-01-051991-12-11
19921992-01-251992-12-20
19941994-02-011994-11-30
19951995-01-031995-12-01
19961996-01-011996-12-18
19971997-01-121997-12-29

Every Fixed Threshold

Fixed thresholds at Ambathala Head Station
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2326192116
25 mm (0.98 in): Days with 25 mm or more rain231119215
50 mm (1.97 in): Days with 50 mm or more rain16419182
100 mm (3.94 in): Days with 100 mm or more rain2119241

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1910.

Download the Data

  • Data for Ambathala Head Station 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).