Colombo weather in August
August in Colombo: sweltering, soaked, with very humid — a fair time to visit.
#5 of 12 months in Colombo · #491 of 604 destinations to visit in August · comfort 59/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Colombo climate normals — August
| Daytime high | 29°C / 84°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 25°C / 77°F | |
| Feels like (high) | 34°C / 93°F | |
| Rainfall | 238 mm / 9.4 in | ⛈ soaked |
| Rainy days | 28 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 24°C / 75°F | |
| Sunshine | 9.4 h/day | |
| Daylight | 12.3 h | |
| Wind | 17 km/h / 11 mph | |
| Air quality (US AQI) | 55 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Colombo in August — FAQ
- Is August a good time to visit Colombo?
- August in Colombo: sweltering, soaked, with very humid — a fair time to visit. It ranks #5 of 12 months for Colombo on SeasonMap's comfort score (59/100).
- What is the weather like in Colombo in August?
- In August, Colombo averages a daily high of 28.8°C and a low of 24.8°C, with about 238.1 mm of rain over roughly 28.2 rainy days.
- What is the air quality in Colombo in August?
- Colombo has a mean US Air Quality Index of about 55 in August.