Siwān Climate by Month
Siwān, Bihar, India
Very hot summers and mild winters, with most rain from July to September.
Siwān has very hot summers and mild winters, with most rain from July to September. Expect highs of 101°F (38°C) in May and 71°F (22°C) in January, with the coldest nights (January) near 48°F (9°C). Of the 43 in (1091 mm) of rain in a typical year, 73% falls from July to September. February, November and December are almost completely dry.
- Warmest month
- 101°F(38°C)
- Average high, May
- Coldest nights
- 48°F(9°C)
- Average low, January
- Rain per year
- 43 in(1091 mm)
- Wettest: August
- Humidity
- 73%
- Sunniest: May
Best and worst months in Siwān
Best for weatherDecember is the best time for weather in Siwān: highs near 76°F (24°C) and almost no rain.
Least pleasantAugust is the least pleasant month: it's the wettest, with 13 in (327 mm) of rain.
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in December.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Siwān weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 71°F(22°C) | 48°F(9°C) | 0.6 in(16 mm) | 79% | 4.1 |
| FebFebruary | 80°F(27°C) | 53°F(12°C) | 0.3 in(8 mm) | 72% | 5.1 |
| MarMarch | 90°F(32°C) | 62°F(16°C) | 0.4 in(11 mm) | 59% | 5.9 |
| AprApril | 100°F(38°C) | 71°F(21°C) | 0.4 in(10 mm) | 51% | 6.8 |
| MayMay | 101°F(38°C) | 77°F(25°C) | 1.1 in(28 mm) | 58% | 6.9 |
| JunJune | 97°F(36°C) | 79°F(26°C) | 6.7 in(169 mm) | 70% | 5.6 |
| JulJuly | 92°F(33°C) | 79°F(26°C) | 11 in(268 mm) | 82% | 5.0 |
| AugAugust | 91°F(33°C) | 79°F(26°C) | 13 in(327 mm) | 82% | 4.8 |
| SepSeptember | 91°F(33°C) | 78°F(26°C) | 8.0 in(204 mm) | 82% | 4.8 |
| OctOctober | 90°F(32°C) | 72°F(22°C) | 1.8 in(45 mm) | 79% | 5.0 |
| NovNovember | 84°F(29°C) | 58°F(15°C) | 0.1 in(3 mm) | 77% | 4.5 |
| DecDecemberBest | 76°F(24°C) | 50°F(10°C) | 0.1 in(2 mm) | 82% | 4.0 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate
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