Miri Weather in December
What's the weather like in Miri (Sarawak) in December 2025?
The climate in Miri during December can be summarized as hot, humid and very wet.
December is in the winter in Miri and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a steamy 30°C (87°F), whilst at night 23°C (73°F) is normal.
| Daytime temperature | 30.4°C 86.7°F |
|---|---|
| Nightly temperature | 23°C 73.4°F |
| Average temperature | 26.7°C 80.1°F |
| Daily sunshine | 6.5 hrs |
| Avg rainfall | 363 mm 14.3 ins |
| Rainy days | 26 days |
| Sea temperature | 28.7°C 83.7°F |
| Humidity | 86% |
| Windspeed | 5.8kph 4 mph |
On average December is the wettest month of the year in Miri with around 363mm 14.3 inches of rain making it a very wet time to visit. This rainfall is typically spread over 26 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.5 hours of sunshine per day.
December temperatures in Miri
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Miri in December 2025.
Other monthly averages
Best places to visit in December
Miri weather stats
| Hottest month: | May | 31.5°C 88.7°F |
|---|---|---|
| Driest month: | February | 159mm 6.3ins |
| Sunniest month: | April | 7.7hrs |
| Coldest month: | January | 29.7°C 85.5°F |
| Wettest month: | December | 363mm 14.3ins |
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