What to pack for Colombo in August
- light, breathable clothing
- sun protection (hat, SPF 50)
- a compact umbrella or rain shell — rain is frequent
- expect humid, sticky conditions
Humidity averages 86%; max daily wind around 20 km/h.
How August compares
Best months in Colombo: January–February & June–October. See the full best time to visit Colombo guide.
Colombo in August: the details
In August, Colombo sees average daytime highs of 29°C (83°F) and overnight lows of 25°C (77°F). Rainfall totals roughly 283 mm across 29 rainy days, and the sun shines about 9.3 hours per day with 12.2 hours of daylight mid-month. Relative humidity averages 86%.
In context: August is the 10th-warmest month and the 6th-wettest in Colombo. The sunniest month is February (11.1 h/day).
| Metric | August average |
|---|---|
| Daytime high | 29°C / 83°F |
| Overnight low | 25°C / 77°F |
| Rainfall | 283 mm over 29 rainy days |
| Sunshine | 9.3 h/day (12.2 h daylight) |
| Humidity | 86% |
| Travel score | 5.4 / 10 |
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Colombo, Sri Lanka (6.94, 79.85) — see our methodology. Actual conditions vary year to year.
Not set on Colombo? Browse the best places to visit in August ranked by travel score.
Frequently asked questions
How hot is Colombo in August?
Daytime highs in Colombo in August average 29°C (83°F); nights drop to about 25°C.
Does it rain in Colombo in August?
Expect around 29 rainy days and 283 mm of rainfall in August.
Is August a good time to visit Colombo?
August is a fair shoulder-season month in Colombo — decent conditions with some trade-offs. Overall travel score: 5.4/10. The best months are January–February & June–October.
Where should you go next month?
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