What to pack for Colombo in December
- light, breathable clothing
- sun protection (hat, SPF 50)
- a compact umbrella or rain shell — rain is frequent
- expect humid, sticky conditions
Humidity averages 85%; max daily wind around 15 km/h.
How December compares
Best months in Colombo: January–February & June–October. See the full best time to visit Colombo guide.
Colombo in December: the details
In December, Colombo sees average daytime highs of 30°C (85°F) and overnight lows of 23°C (74°F). Rainfall totals roughly 192 mm across 21 rainy days, and the sun shines about 8.8 hours per day with 11.6 hours of daylight mid-month. Relative humidity averages 85%.
In context: December is the 6th-warmest month and the 8th-wettest in Colombo. The sunniest month is February (11.1 h/day).
| Metric | December average |
|---|---|
| Daytime high | 30°C / 85°F |
| Overnight low | 23°C / 74°F |
| Rainfall | 192 mm over 21 rainy days |
| Sunshine | 8.8 h/day (11.6 h daylight) |
| Humidity | 85% |
| Travel score | 4.6 / 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 December ranked by travel score.
Frequently asked questions
How hot is Colombo in December?
Daytime highs in Colombo in December average 30°C (85°F); nights drop to about 23°C.
Does it rain in Colombo in December?
Expect around 21 rainy days and 192 mm of rainfall in December.
Is December a good time to visit Colombo?
December is a challenging month to visit Colombo — consider January–February & June–October instead. Overall travel score: 4.6/10. The best months are January–February & June–October.
Also good in December, near Colombo
Where should you go next month?
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