Sibu Weather in August
What's the weather like in Sibu (Sarawak) in August 2025?
The climate in Sibu during August can be summarized as hot, humid and very wet.
August is in the summer in Sibu and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (88°F), whilst at night 22°C (72°F) is normal.
| Daytime temperature | 31.2°C 88.1°F |
|---|---|
| Nightly temperature | 22.1°C 71.7°F |
| Average temperature | 26.6°C 79.9°F |
| Daily sunshine | 6.2 hrs |
| Avg rainfall | 236 mm 9.3 ins |
| Rainy days | 19 days |
| Sea temperature | 29.8°C 85.7°F |
| Humidity | 84% |
| Windspeed | 3.2kph 2 mph |
On average August is the 4th driest month of the year in Sibu with around 236mm 9.3 inches of rain making it a very wet time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.2 hours of sunshine per day.
August temperatures in Sibu
August rainfall
August 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 Sibu in August 2025.
Other monthly averages
Best places to visit in August
Sibu weather stats
| Hottest month: | May | 31.2°C 88.2°F |
|---|---|---|
| Driest month: | June | 172mm 6.8ins |
| Sunniest month: | July | 6.8hrs |
| Coldest month: | January | 29°C 84.2°F |
| Wettest month: | January | 404mm 15.9ins |
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