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Sītāmarhi Weather by Month
Average temperatures, rainfall and humidity for Sītāmarhi, India, month by month, built from OpenWeather’s historical records. Use it to see what a typical Sītāmarhi month looks like before you travel — then check the live Sītāmarhi forecast for the days ahead.
Warmest month
May
38°C average high
Coolest month
January
10°C average low
Wettest month
December
640 mm of rain
Driest month
February
7 mm of rain
Average temperature and rainfall in Sītāmarhi 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 | 22°C | 10°C | 3°C / 29°C | 526 mm | 69% | 9 km/h |
| February | 26°C | 13°C | 7°C / 33°C | 7 mm | 59% | 9 km/h |
| March | 32°C | 18°C | 8°C / 41°C | 21 mm | 44% | 11 km/h |
| April | 38°C | 23°C | 16°C / 45°C | 10 mm | 37% | 13 km/h |
| May | 38°C | 26°C | 19°C / 47°C | 21 mm | 50% | 14 km/h |
| June | 37°C | 27°C | 21°C / 47°C | 63 mm | 62% | 14 km/h |
| July | 34°C | 27°C | 22°C / 41°C | 98 mm | 73% | 14 km/h |
| August | 33°C | 26°C | 23°C / 39°C | 97 mm | 77% | 12 km/h |
| September | 33°C | 25°C | 21°C / 40°C | 72 mm | 78% | 11 km/h |
| October | 32°C | 22°C | 15°C / 37°C | 134 mm | 68% | 8 km/h |
| November | 28°C | 16°C | 9°C / 35°C | 509 mm | 59% | 7 km/h |
| December | 23°C | 12°C | 5°C / 31°C | 640 mm | 64% | 8 km/h |
Best time to visit Sītāmarhi
The most comfortable time to visit Sītāmarhi is generally February to March and September, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around December, totalling about 2,196 mm a year.
Travellers who prefer heat should aim for May, when highs average 38°C. December is the month to avoid if rain would spoil your plans — it averages 640 mm, roughly 95× the rainfall of the driest month (February).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Sītāmarhi forecast for what is happening now.