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Data as of 2025-12-31
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Built 2026-10-16 (16 October 2026)

Waikolu 540 Threshold Days by Year

5 fixed thresholds counted per year at Waikolu 540 (USC00519404): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Waikolu 540 Thresholds

  • Waikolu 540: days with 10 mm (0.39 in) or more of precipitation in 1 years, most in 1969 with 44.
  • Waikolu 540: days with 25 mm (0.98 in) or more of precipitation in 1 years, most in 1969 with 32.
  • Waikolu 540: days with 50 mm (1.97 in) or more of precipitation in 1 years, most in 1969 with 18.
  • Waikolu 540: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1969 with 9.
  • 5 fixed thresholds have at least one qualifying day at Waikolu 540.
1 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Waikolu 540 Days per year at Waikolu 540 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 1969. 02040601969: 441969
Days per year at Waikolu 540 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 1969.
Days with 10 mm (0.39 in) or more of precipitation per year at Waikolu 540
YearDaysDecade average
19694444
First to last qualifying date each year at Waikolu 540 For each year, a bar from the first to the last day at Waikolu 540 meeting 10 mm (0.39 in). 1969: 6 January 1969 to 30 December 19691969JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Waikolu 540 meeting 10 mm (0.39 in).
First to last qualifying date each year at Waikolu 540
YearFirst dateLast date
19691969-01-061969-12-30

Every Fixed Threshold

Fixed thresholds at Waikolu 540
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain144196944
25 mm (0.98 in): Days with 25 mm or more rain132196932
50 mm (1.97 in): Days with 50 mm or more rain118196918
100 mm (3.94 in): Days with 100 mm or more rain1919699
200 mm (7.87 in): Days with 200 mm or more rain1219692

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1969.

Download the Data

  • Data for Waikolu 540 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

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