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Climate · Colombo

Colombo in December

Hot and wet, as the days hold steady.

Typical weather, averaged over 30 years

December in Colombo is hot: highs near 88°F, lows near 74°F. Rain falls on about four days a week, less often as the month goes on, and daylight holds at about 11 hours 44 minutes.December in Colombo is hot: highs near 31°C, lows near 23°C. Rain falls on about four days a week, less often as the month goes on, and daylight holds at about 11 hours 44 minutes.

High
88°F31°Caverage
Low
74°F23°Caverage
Wet days
4a week · 61% of days
Daylight
11h 44mon average

Is December a good time to visit Colombo?

Yes. December is one of Colombo's most comfortable months (August to September, or December to February).

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How December sits in the year

week by week

Temperature

Highs near 88°F in December, against 86°F to 92°F through the year.Highs near 31°C in December, against 30°C to 33°C through the year.

Chance of a wet day

61% of days in December, against 35% to 98% through the year.

Cloud cover

69% cover in December, against 62% to 77% through the year.

Daylight

11h 44m in December, against 11h 44m to 12h 31m through the year.

Week by week, lightly smoothed, with December shaded. The olive line marks the most comfortable months. Hover or tap a week for its figures.

Either side

  1. November87°31°low 74°low 23°6 wet days a weekRain on about six days a week.
  2. December88°31°low 74°low 23°4 wet days a weekRain on about four days a week.
  3. January89°32°low 73°low 23°2 wet days a weekRain on about two days a week.

Where Colombo sits, in December

Asia/Colombo
this place
typical high in December 40°F4°C95°F35°C
Sunrise, mid-December
6:14 AMsets 5:57 PM
Above the sea
10 mlow-lying
Latitude
6.9°Nnorthern hemisphere
Nearest of ours
Galle108 km south

The land around Colombo, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Sri Lanka in December

high · low · wet days
See December on the planning mapThe whole year in Colombo

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Colombo. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.