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Semarang Weather by Month
Average temperatures, rainfall and humidity for Semarang, Indonesia, month by month, built from OpenWeather’s historical records. Use it to see what a typical Semarang month looks like before you travel — then check the live Semarang forecast for the days ahead.
Warmest month
September
33°C average high
Coolest month
July
22°C average low
Wettest month
March
234 mm of rain
Driest month
August
19 mm of rain
Average temperature and rainfall in Semarang 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 | 23°C | 9°C / 34°C | 136 mm | 87% | 9 km/h |
| February | 29°C | 23°C | 13°C / 34°C | 190 mm | 87% | 9 km/h |
| March | 30°C | 23°C | 18°C / 35°C | 234 mm | 85% | 7 km/h |
| April | 31°C | 24°C | 11°C / 35°C | 197 mm | 84% | 7 km/h |
| May | 32°C | 23°C | 9°C / 36°C | 82 mm | 82% | 8 km/h |
| June | 31°C | 22°C | 9°C / 36°C | 51 mm | 81% | 8 km/h |
| July | 32°C | 22°C | 10°C / 35°C | 51 mm | 75% | 8 km/h |
| August | 32°C | 22°C | 13°C / 37°C | 19 mm | 73% | 9 km/h |
| September | 33°C | 23°C | 14°C / 54°C | 38 mm | 73% | 9 km/h |
| October | 32°C | 22°C | 8°C / 39°C | 82 mm | 76% | 8 km/h |
| November | 30°C | 23°C | 8°C / 37°C | 154 mm | 84% | 7 km/h |
| December | 30°C | 23°C | 8°C / 36°C | 134 mm | 86% | 7 km/h |
Best time to visit Semarang
The most comfortable time to visit Semarang is generally June to August, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around March, totalling about 1,368 mm a year.
Travellers who prefer heat should aim for September, when highs average 33°C. March is the month to avoid if rain would spoil your plans — it averages 234 mm, roughly 12× the rainfall of the driest month (August).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Semarang forecast for what is happening now.