Warm
Average highs sit around 30°C, giving warm days by monthly-average standards.
Weather Guide
Colombo, Sri Lanka Average Monthly Weather
Weather score63Good annual avg
Best months: January, February, March
Across the year, average daytime temperatures are around 31°C, sunshine averages 7h per day, and rainfall totals about 2403mm. Sea temperatures average 28°C across the year.
Annual weather
Annual averages
Temp
31°C
Rain
2403mm
Annual total
Sun
7h
Sea
28°C
Weather score
63
Good avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 124mm, so some wet days are possible.
Some sun
Sunshine averages 6.2h per day, enough for a balanced month.
Warm sea
Sea temperatures average 28°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Colombo, Sri Lanka with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
July30°C average high
July is close to Colombo's usual daytime heat, with little temperature swing across the year.
Warmest monthsAll year
Daytime heat stays consistently warm through the year.
Rain
July124mm average rain
July sits on the drier side of Colombo's year, which helps with sightseeing and transfers.
Driest monthsJanuary to March, July to August, and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
July6.2 hours average sun
July is one of Colombo's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsFebruary to March
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
July28°C average sea
July is one of the cooler sea months locally, though the water still averages warm enough for most swimmers.
Warmest seaMarch to May
Sea temperatures are usually near 29°C in this stretch, so swimming comfort is at its strongest.
Weather score
July64 weather score
July sits close to Colombo's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJanuary to March
These months have the strongest weather score in the monthly averages.
