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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Surabaya/Perak Threshold Days by Year (IDM00096933)

7 fixed thresholds counted per year at Surabaya/Perak (IDM00096933): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Surabaya/Perak Thresholds

  • Surabaya/Perak: days with a maximum temperature at or above 30 C (86 F) in 7 years, most in 2011 with 352.
  • Surabaya/Perak: days with a maximum temperature at or above 90 F (32.2 C) in 7 years, most in 2009 with 298.
  • Surabaya/Perak: days with a maximum temperature at or above 35 C (95 F) in 6 years, most in 2009 with 80.
  • Surabaya/Perak: nights with a minimum temperature at or above 20 C (68 F) in 2 years, most in 2010 with 328.
  • 7 fixed thresholds have at least one qualifying day at Surabaya/Perak.
7 years with a qualifying day
Days at or above 30 C (86 F) per year at Surabaya/Perak Days per year at Surabaya/Perak with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 352 in 2011. 01002003004002004: 3322008: 3292009: 3292010: 3312011: 3522012: 3422025: 1892004200820092010201120122025
Days per year at Surabaya/Perak with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 352 in 2011.
Days at or above 30 C (86 F) per year at Surabaya/Perak
YearDaysDecade average
2004332330
2008329330
2009329330
2010331341.7
2011352341.7
2012342341.7
2025189189
First to last qualifying date each year at Surabaya/Perak For each year, a bar from the first to the last day at Surabaya/Perak meeting 30 C (86 F). 2004: 2 January 2004 to 31 December 20042008: 2 January 2008 to 31 December 20082009: 1 January 2009 to 31 December 20092010: 1 January 2010 to 31 December 20102011: 2 January 2011 to 31 December 20112012: 2 January 2012 to 31 December 20122025: 4 January 2025 to 24 August 20252004200820092010201120122025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Surabaya/Perak meeting 30 C (86 F).
First to last qualifying date each year at Surabaya/Perak
YearFirst dateLast date
20042004-01-022004-12-31
20082008-01-022008-12-31
20092009-01-012009-12-31
20102010-01-012010-12-31
20112011-01-022011-12-31
20122012-01-022012-12-31
20252025-01-042025-08-24

Every Fixed Threshold

Fixed thresholds at Surabaya/Perak
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days73522011189
35 C (95 F): Days680200954
90 F (32.2 C): Days72982009160
100 F (37.8 C): Days1220042
20 C (68 F): Tropical nights (min23282010133
25 C (77 F): Days with min280201091
10 mm (0.39 in): Days with 10 mm or more rain1119781

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2004.

Download the Data

  • Data for Surabaya/Perak 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).