Climate averages 1991–2020
Siwān weather
in June.
A very hot, very wet month: the 3rd warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a very hot month in Siwān: daytime highs average 35.6°C and nights cool to about 27.0°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 180 mm of rain on roughly 16 days, which makes June a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 45 min on an average June day.
The nearest other city in this atlas is Chāpra (63 km away). In June its highs average 35.8°C, about as warm as Siwān, with 175 mm of rain.
Among the 692 cities listed in India, Siwān ranks joint 299th of 692 for the warmest June highs and joint 499th of 692 for the driest June (rainfall, lowest first). The mean June high of those 692 cities is 34.5°C; Siwān is 1.0°C warmer than that mean.
From June to July, average highs fall by 3.7°C to 31.9°C, and monthly rainfall rises from 180 mm to 329 mm.
The annual picture
June in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Siwān climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 21.8°C10.3°C | 10.3°C | 16 | 2.2 | 10.711 h |
| February | 25.7°C13.2°C | 13.2°C | 17 | 2.4 | 11.311 h |
| March | 32.0°C18.2°C | 18.2°C | 12 | 2.1 | 12.012 h |
| April | 37.1°C23.3°C | 23.3°C | 10 | 2.5 | 12.813 h |
| May | 37.6°C26.1°C | 26.1°C | 29 | 5.2 | 13.413 h |
| June, selected | 35.6°C27.0°C | 27.0°C | 180 | 15.5 | 13.814 h |
| July | 31.9°C26.3°C | 26.3°C | 329 | 26.0 | 13.614 h |
| August | 31.5°C26.0°C | 26.0°C | 294 | 26.6 | 13.113 h |
| September | 30.9°C25.0°C | 25.0°C | 205 | 20.5 | 12.312 h |
| October | 30.2°C21.3°C | 21.3°C | 37 | 4.3 | 11.612 h |
| November | 27.8°C16.0°C | 16.0°C | 4.5 | 0.4 | 10.911 h |
| December | 23.7°C11.8°C | 11.8°C | 7.6 | 0.7 | 10.511 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
June in nearby cities
- Chāpra in JuneIndia · 63 kmHigh 35.8°C · Low 27.3°C · 175 mm rain
- Deoria in JuneIndia · 65 kmHigh 35.5°C · Low 27.0°C · 194 mm rain
- Bettiah in JuneIndia · 66 kmHigh 34.6°C · Low 26.5°C · 215 mm rain
- Mothīhāri in JuneIndia · 73 kmHigh 34.6°C · Low 26.5°C · 264 mm rain
- Kushinagar in JuneIndia · 74 kmHigh 35.2°C · Low 26.8°C · 203 mm rain
- Arrah in JuneIndia · 80 kmHigh 36.1°C · Low 27.5°C · 179 mm rain
- Buxar in JuneIndia · 81 kmHigh 36.6°C · Low 27.9°C · 182 mm rain
- Mau in JuneIndia · 85 kmHigh 36.4°C · Low 27.7°C · 178 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Siwān) is explained once on the Siwān year overview and on the Sources, method and limits page.