Climate · Sri Lanka

Colombo

Hot all year, wet from April to November and drier from January to February.

Typical weather, averaged over 30 years6.9°N10 m above the sea
  1. Jan89°32°73°23°Rain on about two days a week.
  2. Feb92°33°74°23°Rain on about three days a week.
  3. Mar92°33°75°24°Rain on about four days a week.
  4. Apr91°33°77°25°Rain on almost every day.
  5. May89°32°78°26°Rain on almost every day.
  6. Jun87°31°77°25°Rain on almost every day.
  7. Jul87°31°77°25°Rain on almost every day.
  8. Aug86°30°76°24°Rain on almost every day.
  9. Sep86°30°76°24°Rain on almost every day.
  10. Oct87°31°76°24°Rain on almost every day.
  11. Nov87°31°74°23°Rain on about six days a week.
  12. Dec88°31°74°23°Rain on about four days a week.
Each month: its typical high and low, and dots for wet days a week. Tap a month to open it.The most comfortable months

Highs hardly move, between 86°F and 92°F all year, with nights near 76°F. The rain comes from April to November, on almost every day. January to February is the driest stretch, with rain on about three days a week. Daylight stays near 12 hours all year.Highs hardly move, between 30°C and 33°C all year, with nights near 24°C. The rain comes from April to November, on almost every day. January to February is the driest stretch, with rain on about three days a week. Daylight stays near 12 hours all year.

Where Colombo sits

Asia/Colombo

this place
typical high in Januarytypical high in Februarytypical high in Marchtypical high in Apriltypical high in Maytypical high in Junetypical high in Julytypical high in Augusttypical high in Septembertypical high in Octobertypical high in Novembertypical high in December 40°F4°C95°F35°C
Latitude
6.9°Nnorthern hemisphere
Above the sea
10 mlow-lying
Sunrise, mid-JanuarySunrise, mid-FebruarySunrise, mid-MarchSunrise, mid-AprilSunrise, mid-MaySunrise, mid-JuneSunrise, mid-JulySunrise, mid-AugustSunrise, mid-SeptemberSunrise, mid-OctoberSunrise, mid-NovemberSunrise, mid-December
6:26 AM6:28 AM6:18 AM6:03 AM5:54 AM5:55 AM6:02 AM6:05 AM6:01 AM5:57 AM6:01 AM6:14 AMsets 6:12 PMsets 6:22 PMsets 6:22 PMsets 6:19 PMsets 6:20 PMsets 6:26 PMsets 6:31 PMsets 6:26 PMsets 6:11 PMsets 5:56 PMsets 5:50 PMsets 5:57 PM
Nearest of ours
Galle108 km south

The land around Colombo, shaded by its typical high in January, the planning map's own layer.The land around Colombo, shaded by its typical high in February, the planning map's own layer.The land around Colombo, shaded by its typical high in March, the planning map's own layer.The land around Colombo, shaded by its typical high in April, the planning map's own layer.The land around Colombo, shaded by its typical high in May, the planning map's own layer.The land around Colombo, shaded by its typical high in June, the planning map's own layer.The land around Colombo, shaded by its typical high in July, the planning map's own layer.The land around Colombo, shaded by its typical high in August, the planning map's own layer.The land around Colombo, shaded by its typical high in September, the planning map's own layer.The land around Colombo, shaded by its typical high in October, the planning map's own layer.The land around Colombo, shaded by its typical high in November, the planning map's own layer.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.

Through the year

week by week

Temperature

Highs from 86°F in August and September to 92°F in February and March.Highs from 30°C in August and September to 33°C in February and March.

Chance of a wet day

Wettest in May and June (98% of days), driest in January (35%).

Cloud cover

Clearest in March (62% cover), cloudiest in May (77%).

Daylight

About 12 hours all year, as near the equator.

Week by week, lightly smoothed. Shading marks the seasons; the olive line, the most comfortable months. Hover or tap a week for its figures.

Month by month

°F°C

Colombo, month by month: the typical high and low, wet days a week, cloud cover and daylight.
MonthTypical low to highWet days a weekCloudDaylight
JanuaryDry seasonMost comfortable
73°23°89°32°
2 days63%11h 46m
FebruaryDry seasonMost comfortable
74°23°92°33°
3 days63%11h 54m
March
75°24°92°33°
4 days62%12h 04m
AprilRainy season
77°25°91°33°
7 days72%12h 16m
MayRainy season
78°26°89°32°
7 days77%12h 26m
JuneRainy season
77°25°87°31°
7 days76%12h 31m
JulyRainy season
77°25°87°31°
7 days76%12h 29m
AugustRainy seasonMost comfortable
76°24°86°30°
7 days76%12h 20m
SeptemberRainy seasonMost comfortable
76°24°86°30°
7 days75%12h 09m
OctoberRainy season
76°24°87°31°
7 days75%11h 57m
NovemberRainy season
74°23°87°31°
6 days75%11h 48m
DecemberMost comfortable
74°23°88°31°
4 days69%11h 44m

When is the best time to visit Colombo?


Colombo is hot all year. Its most comfortable months are August to September, or December to February: highs near 88°F, nights near 75°F, and rain on about five days a week.Colombo is hot all year. Its most comfortable months are August to September, or December to February: highs near 31°C, nights near 24°C, and rain on about five days a week.

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.

Questions


What is the warmest month in Colombo?

February and March, with highs near 92°F and lows near 75°F. The coolest are August and September, with highs near 86°F.February and March, with highs near 33°C and lows near 24°C. The coolest are August and September, with highs near 30°C.

When does it rain most in Colombo?

May and June, with rain on almost every day. January is the driest, with rain on about two days a week.

How long are the days in Colombo?

About 12 hours all year, as near the equator.

When are the skies clearest in Colombo?

March, when cloud covers about 62% of the sky on average. May is the cloudiest, at about 77%.

Places with a year like Colombo's

by their highs, lows and wet days

Their highs, lows, wet days and cloud run closest to Colombo's through the year, one place a country. “Six months apart”: their winter is Colombo's summer.

Elsewhere in Sri Lanka

All of Sri Lanka

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.