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Weather & Climate
Siwan, Bihar, India
Overview
Climate data and monthly weather averages for Siwan.
Key Metrics
Annual Avg
26.1°C
Summer Avg
31.4°C
Winter Avg
17.2°C
Record High
48.2°C
Record Low
1.3°C
Annual Precipitation
1011.6 mm
Avg Humidity
56%
Summer Humidity
70%
Winter Humidity
50%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 30.5° | 15.4° | 1.3° | 10.8 | 50% | 89 | 34.7 |
| Feb | 38.6° | 19.8° | 3.6° | 14.3 | 43% | 122 | 45.3 |
| Mar | 43.3° | 26° | 8.6° | 9.9 | 31% | 177 | 39.1 |
| Apr | 46.1° | 32° | 16.7° | 16.2 | 25% | 193 | 39.2 |
| May | 47.1° | 34.7° | 20.1° | 51.8 | 33% | 197 | 40.1 |
| Jun | 48.2° | 34.6° | 23.6° | 154.8 | 49% | 166 | 54.7 |
| Jul | 42.1° | 30.4° | 24.3° | 289.8 | 77% | 143 | 48.9 |
| Aug | 38.1° | 29.2° | 24° | 234.4 | 83% | 150 | 47.7 |
| Sep | 36.1° | 28° | 19.3° | 179.4 | 84% | 137 | 51.9 |
| Oct | 36.7° | 25.4° | 12.8° | 45.9 | 73% | 139 | 44.6 |
| Nov | 35° | 20.8° | 7.8° | 1.2 | 62% | 111 | 26.2 |
| Dec | 31.9° | 16.4° | 1.9° | 3.1 | 56% | 86 | 25.8 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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