Colombo weather in December
December in Colombo: sweltering, soaked, with very humid — a good time to visit.
#4 of 12 months in Colombo · #405 of 604 destinations to visit in December · comfort 61/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Colombo climate normals — December
| Daytime high | 30°C / 85°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 24°C / 74°F | |
| Feels like (high) | 35°C / 95°F | |
| Rainfall | 207 mm / 8.2 in | ⛈ soaked |
| Rainy days | 20 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 23°C / 74°F | |
| Sunshine | 8.9 h/day | |
| Daylight | 11.7 h | |
| Wind | 12 km/h / 8 mph | |
| Air quality (US AQI) | 74 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Colombo in December — FAQ
- Is December a good time to visit Colombo?
- December in Colombo: sweltering, soaked, with very humid — a good time to visit. It ranks #4 of 12 months for Colombo on SeasonMap's comfort score (61/100).
- What is the weather like in Colombo in December?
- In December, Colombo averages a daily high of 29.5°C and a low of 23.5°C, with about 207.3 mm of rain over roughly 19.8 rainy days.
- What is the air quality in Colombo in December?
- Colombo has a mean US Air Quality Index of about 74 in December.