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Sumber Weather by Month
Average temperatures, rainfall and humidity for Sumber, Indonesia, month by month, built from OpenWeather’s historical records. Use it to see what a typical Sumber month looks like before you travel — then check the live Sumber forecast for the days ahead.
Warmest month
September
31°C average high
Coolest month
August
24°C average low
Wettest month
January
148 mm of rain
Driest month
August
11 mm of rain
Average temperature and rainfall in Sumber by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 29°C | 25°C | 23°C / 36°C | 148 mm | 88% | 12 km/h |
| February | 29°C | 25°C | 23°C / 34°C | 143 mm | 88% | 12 km/h |
| March | 30°C | 26°C | 23°C / 35°C | 133 mm | 86% | 9 km/h |
| April | 31°C | 26°C | 23°C / 35°C | 93 mm | 83% | 8 km/h |
| May | 31°C | 26°C | 24°C / 35°C | 45 mm | 83% | 10 km/h |
| June | 31°C | 26°C | 22°C / 35°C | 32 mm | 84% | 11 km/h |
| July | 31°C | 25°C | 20°C / 34°C | 25 mm | 82% | 13 km/h |
| August | 31°C | 24°C | 20°C / 35°C | 11 mm | 79% | 14 km/h |
| September | 31°C | 25°C | 21°C / 36°C | 18 mm | 78% | 14 km/h |
| October | 31°C | 26°C | 20°C / 36°C | 42 mm | 79% | 12 km/h |
| November | 31°C | 26°C | 24°C / 35°C | 105 mm | 82% | 9 km/h |
| December | 30°C | 26°C | 23°C / 35°C | 133 mm | 86% | 9 km/h |
Best time to visit Sumber
The most comfortable time to visit Sumber is generally July to September, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around January, totalling about 926 mm a year.
Travellers who prefer heat should aim for September, when highs average 31°C. January is the month to avoid if rain would spoil your plans — it averages 148 mm, roughly 14× the rainfall of the driest month (August).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Sumber forecast for what is happening now.
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