When to go · Colombo

Colombo in September

Mixed month. Mixed; showers and storms.

Key facts

Verdict: Mixed
Temperature: 29°C (84°F)84°F (29°C) / 25°C (77°F)77°F (25°C); average high / low
Rain days: 15
Crowds: Low; Sri Lanka overall
Prices: Low; Sri Lanka overall

Plan around it

Verdict

MixedVoykit month rating for Colombo

Mixed; showers and storms.

All twelve months in one grid — weather, crowds and prices, with gaps left as unknown.

September is rated mixed. These months rate higher:

Long-term averages

ColomboHighs around 29 °C (84 °F), lows around 25 °C (77 °F), rain on about 15 daysHighs around 84 °F (29 °C), lows around 77 °F (25 °C), rain on about 15 days
West and south coast, Sri Lanka · Colombo, Negombo, Bentota, Galle, Mirissarainy
South-west monsoon May–Sep brings rough seas and red flags; October–November inter-monsoon storms are heavy in Colombo.

South-west monsoon season

Heavy, frequent rain; the east coast is drier in this window if you are combining regions.

Watch: Flooded streets after storms; rough seas.

Sri Lanka overall: East still good; Yala often closes for part of September–October.

Weather, crowds and prices for any two months in Colombo, side by side.

First month

Second month

September: Mixed; showers and storms.

January: Driest and coolest month for the west coast; warm all the same.

Colombo: figures are long-term averages from this guide, not a forecast.