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Si Racha Weather by Month
Average temperatures, rainfall and humidity for Si Racha, Thailand, month by month, built from OpenWeather’s historical records. Use it to see what a typical Si Racha month looks like before you travel — then check the live Si Racha forecast for the days ahead.
Warmest month
April
34°C average high
Coolest month
January
24°C average low
Wettest month
September
147 mm of rain
Driest month
January
22 mm of rain
Average temperature and rainfall in Si Racha 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 | 31°C | 24°C | 16°C / 37°C | 22 mm | 68% | 12 km/h |
| February | 32°C | 25°C | 16°C / 38°C | 24 mm | 69% | 13 km/h |
| March | 33°C | 27°C | 22°C / 38°C | 63 mm | 72% | 15 km/h |
| April | 34°C | 28°C | 20°C / 40°C | 44 mm | 71% | 15 km/h |
| May | 34°C | 28°C | 23°C / 40°C | 75 mm | 73% | 13 km/h |
| June | 32°C | 27°C | 23°C / 38°C | 91 mm | 73% | 16 km/h |
| July | 32°C | 27°C | 22°C / 37°C | 119 mm | 74% | 16 km/h |
| August | 32°C | 27°C | 22°C / 37°C | 100 mm | 73% | 15 km/h |
| September | 31°C | 26°C | 23°C / 36°C | 147 mm | 76% | 12 km/h |
| October | 31°C | 25°C | 21°C / 36°C | 146 mm | 78% | 10 km/h |
| November | 31°C | 25°C | 16°C / 36°C | 55 mm | 73% | 12 km/h |
| December | 31°C | 24°C | 16°C / 37°C | 23 mm | 68% | 13 km/h |
Best time to visit Si Racha
The most comfortable time to visit Si Racha is generally December to February, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around September, totalling about 910 mm a year.
Travellers who prefer heat should aim for April, when highs average 34°C. September is the month to avoid if rain would spoil your plans — it averages 147 mm, roughly 7× the rainfall of the driest month (January).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Si Racha forecast for what is happening now.
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