Colombo Weather in December
In December, Colombo averages a high of 31°C (87°F) and a low of 24°C (75°F), from 16 years of daily records (1979–2026).
31°C
Average high
87°F
24°C
Average low
75°F
34°C
Record high
93°F · December 31, 2015
20°C
Record low
68°F · December 24, 2016
What December Is Like in Colombo
- 10 of the 10 warmest Decembers on record in Colombo have come since 2011.
- A typical December brings 25 days above 30°C (86°F).
- The warmest December in the record was 2023; the coldest was 2010.
At least 1 mm of rain falls on 37% of December days, and the month averages 248 mm in total.
Warmest: 2021 (31.6°C)Latest: 2025 (29.5°C)10-year averageLong-run average (30.8°C)
Look Up a Day in December
See the weather in Colombo on any December date, year by year.
Source: NOAA GHCN-Daily, Colombo (1978–2026). Averages cover 1979–2026. How we compute this