Daily records
Page built 2026-10-19
Data as of 2025-12-31
Search
Built 2026-10-19 (19 October 2026)

Porto Santo Threshold Days by Year (POM00008524)

6 fixed thresholds counted per year at Porto Santo (POM00008524): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Porto Santo Thresholds

  • Porto Santo: days with 10 mm (0.39 in) or more of precipitation in 6 years, most in 1979 with 10.
  • Porto Santo: nights with a minimum temperature at or above 20 C (68 F) in 5 years, most in 1989 with 82.
  • Porto Santo: days with a maximum temperature at or above 30 C (86 F) in 4 years, most in 1983 with 4.
  • Porto Santo: days with 25 mm (0.98 in) or more of precipitation in 4 years, most in 1980 with 4.
  • 6 fixed thresholds have at least one qualifying day at Porto Santo.
4 years with a qualifying day
Days at or above 30 C (86 F) per year at Porto Santo Days per year at Porto Santo with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 4 in 1983. 012341978: 21983: 41987: 41988: 11978198319871988
Days per year at Porto Santo with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 4 in 1983.
Days at or above 30 C (86 F) per year at Porto Santo
YearDaysDecade average
197822
198343
198743
198813
First to last qualifying date each year at Porto Santo For each year, a bar from the first to the last day at Porto Santo meeting 30 C (86 F). 1978: 23 July 1978 to 24 September 19781983: 14 June 1983 to 26 September 19831987: 11 September 1987 to 16 September 19871988: 10 September 1988 to 10 September 19881978198319871988JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Porto Santo meeting 30 C (86 F).
First to last qualifying date each year at Porto Santo
YearFirst dateLast date
19781978-07-231978-09-24
19831983-06-141983-09-26
19871987-09-111987-09-16
19881988-09-101988-09-10

Every Fixed Threshold

Fixed thresholds at Porto Santo
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4419831
90 F (32.2 C): Days1119871
20 C (68 F): Tropical nights (min582198925
10 mm (0.39 in): Days with 10 mm or more rain61019796
25 mm (0.98 in): Days with 25 mm or more rain4419802
50 mm (1.97 in): Days with 50 mm or more rain2219802

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1978.

Download the Data

  • Data for Porto Santo 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).