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Built 2026-10-19 (19 October 2026)

Aberdare Threshold Days by Year (ASN00058082)

5 fixed thresholds counted per year at Aberdare (ASN00058082): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Aberdare Thresholds

  • Aberdare: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 1925 with 55.
  • Aberdare: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 1925 with 24.
  • Aberdare: days with 50 mm (1.97 in) or more of precipitation in 29 years, most in 1927 with 10.
  • Aberdare: days with 100 mm (3.94 in) or more of precipitation in 12 years, most in 1899 with 3.
  • 5 fixed thresholds have at least one qualifying day at Aberdare.
31 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Aberdare Days per year at Aberdare with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 55 in 1925. 02040601896: 361897: 341898: 381899: 441901: 341902: 191903: 411904: 401905: 301906: 481907: 401908: 331909: 361910: 431911: 311912: 331913: 361914: 461915: 191916: 371917: 391918: 281919: 281920: 451921: 541922: 351923: 321924: 311925: 551926: 351927: 4618961901190519091913191719211925
Days per year at Aberdare with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 55 in 1925.
Days with 10 mm (0.39 in) or more of precipitation per year at Aberdare
YearDaysDecade average
18963638
18973438
18983838
18994438
19013435.7
19021935.7
19034135.7
19044035.7
19053035.7
19064835.7
19074035.7
19083335.7
19093635.7
19104334
19113134
19123334
19133634
19144634
19151934
19163734
19173934
19182834
19192834
19204541.6
19215441.6
19223541.6
19233241.6
19243141.6
19255541.6
19263541.6
19274641.6
First to last qualifying date each year at Aberdare For each year, a bar from the first to the last day at Aberdare meeting 10 mm (0.39 in). 1896: 9 January 1896 to 10 December 18961897: 10 January 1897 to 29 December 18971898: 1 January 1898 to 20 December 18981899: 1 January 1899 to 31 December 18991901: 22 January 1901 to 22 October 19011902: 3 January 1902 to 18 December 19021903: 14 January 1903 to 25 December 19031904: 22 January 1904 to 23 December 19041905: 16 January 1905 to 17 December 19051906: 9 January 1906 to 26 December 19061907: 4 January 1907 to 29 December 19071908: 11 January 1908 to 28 December 19081909: 10 January 1909 to 28 December 19091910: 7 January 1910 to 18 December 19101911: 11 January 1911 to 3 December 19111912: 6 January 1912 to 21 December 19121913: 5 January 1913 to 13 December 19131914: 27 January 1914 to 29 December 19141915: 7 January 1915 to 27 December 19151916: 12 January 1916 to 25 December 19161917: 16 January 1917 to 21 December 19171918: 2 January 1918 to 17 December 19181919: 1 March 1919 to 30 December 19191920: 4 January 1920 to 17 December 19201921: 5 January 1921 to 31 December 19211922: 1 January 1922 to 18 December 19221923: 6 January 1923 to 26 December 19231924: 7 January 1924 to 17 December 19241925: 5 January 1925 to 31 December 19251926: 1 January 1926 to 31 December 19261927: 8 January 1927 to 29 December 192718961901190519091913191719211925JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Aberdare meeting 10 mm (0.39 in).
First to last qualifying date each year at Aberdare
YearFirst dateLast date
18961896-01-091896-12-10
18971897-01-101897-12-29
18981898-01-011898-12-20
18991899-01-011899-12-31
19011901-01-221901-10-22
19021902-01-031902-12-18
19031903-01-141903-12-25
19041904-01-221904-12-23
19051905-01-161905-12-17
19061906-01-091906-12-26
19071907-01-041907-12-29
19081908-01-111908-12-28
19091909-01-101909-12-28
19101910-01-071910-12-18
19111911-01-111911-12-03
19121912-01-061912-12-21
19131913-01-051913-12-13
19141914-01-271914-12-29
19151915-01-071915-12-27
19161916-01-121916-12-25
19171917-01-161917-12-21
19181918-01-021918-12-17
19191919-03-011919-12-30
19201920-01-041920-12-17
19211921-01-051921-12-31
19221922-01-011922-12-18
19231923-01-061923-12-26
19241924-01-071924-12-17
19251925-01-051925-12-31
19261926-01-011926-12-31
19271927-01-081927-12-29

Every Fixed Threshold

Fixed thresholds at Aberdare
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3155192546
25 mm (0.98 in): Days with 25 mm or more rain3124192520
50 mm (1.97 in): Days with 50 mm or more rain2910192710
100 mm (3.94 in): Days with 100 mm or more rain12318991
200 mm (7.87 in): Days with 200 mm or more rain2118961

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1896.

Download the Data

  • Data for Aberdare 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).