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Weather extremes

How extreme does Colombo's weather get?

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

Based on 48 years of daily weather observations (1978–present), from the Colombo station 4 km away. Updated through May 2026 — 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 Colombo has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
101°F Aug 26, 2010

That is about 15°F hotter than a normal August afternoon in Colombo (typical high near 86°F).

The three most extreme on record

1 101°F Aug 26, 2010
2 99°F Jun 6, 1981
3 97°F Feb 9, 1980
❄️ Coldest night
61°F Jul 18, 1979

About 19°F colder than a normal July night in Colombo (typical low near 80°F).

The three most extreme on record

1 61°F Jul 18, 1979
2 65°F Dec 28, 2011
3 66°F Dec 22, 1980
🌧️ Most rain in one day
18.98 in Jul 18, 1993

More rain in a single day than Colombo usually gets in the whole month of July (typical July total about 3.8 in).

The three most extreme on record

1 18.98 in Jul 18, 1993
2 18.97 in Mar 7, 2013
3 17.44 in Nov 11, 2010

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.

50°70°90°110°130° all-time high 101°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Colombo's record heat sits well above even a hot day for the season — August's 101°F is about 15°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, Colombo's warmest days reach the low 90s°F and its coldest nights drop to the mid-70s°F. But across the record it has gone as high as 101°F and as low as 61°F. A single day has delivered over 19 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 — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.

Precipitation — 1991–2020 normals computed from 12 years of daily observations at Colombo, a weather station, about 4 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →