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Weather extremes

How extreme does Surabaya's weather get?

The hottest, coldest, wettest and snowiest days Surabaya has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 34 years of daily weather observations (1991–present), from the Surabaya/Perak station 5 km away. Updated through August 2025 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Surabaya has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
103°F Mar 24, 2008

That is about 12°F hotter than a normal March afternoon in Surabaya (typical high near 91°F).

The three most extreme on record

1 103°F Mar 24, 2008
2 102°F Apr 22, 2007
3 102°F Apr 20, 2001
❄️ Coldest night
53°F Jul 8, 1995

About 21°F colder than a normal July night in Surabaya (typical low near 74°F).

The three most extreme on record

1 53°F Jul 8, 1995
2 54°F Nov 27, 1996
3 54°F Aug 13, 2003
🌧️ Most rain in one day
6.34 in Mar 4, 2004

About 85% of a typical March's rain in a single day (Surabaya averages roughly 7.5 in across the month).

The three most extreme on record

1 6.34 in Mar 4, 2004
2 5.47 in Feb 4, 1991
3 5.28 in Jan 25, 2025

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

30°50°70°90°110°130° all-time high 103°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Surabaya's record heat sits well above even a hot day for the season — March's 103°F is about 12°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Surabaya's warmest days reach the mid-90s°F and its coldest nights drop to the mid-70s°F. But across the record it has gone as high as 103°F and as low as 53°F. A single day has delivered over 6 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.
Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 23 years of daily observations at Surabaya/perak, a weather station, about 5 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →