Climate averages 1991–2020
Rajpur Sonarpur weather
in September.
A hot, very wet month: the 7th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Rajpur Sonarpur: daytime highs average 30.7°C and nights cool to about 25.4°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 244 mm of rain on roughly 25 days, which makes September a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 18 min on an average September day.
The nearest other city in this atlas is Kolkata (16 km away). In September its highs average 30.8°C, about as warm as Rajpur Sonarpur, with 250 mm of rain.
Among the 692 cities listed in India, Rajpur Sonarpur ranks joint 373rd of 692 for the warmest September highs and joint 617th of 692 for the driest September (rainfall, lowest first). The mean September high of those 692 cities is 30.7°C; Rajpur Sonarpur is level with that mean.
From September to October, average highs fall by 0.5°C to 30.2°C, and monthly rainfall falls from 244 mm to 133 mm.
The annual picture
September 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
Rajpur Sonarpur climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.3°C13.6°C | 13.6°C | 13 | 1.6 | 10.911 h |
| February | 28.8°C17.1°C | 17.1°C | 22 | 2.7 | 11.411 h |
| March | 33.2°C22.0°C | 22.0°C | 33 | 4.6 | 12.012 h |
| April | 35.1°C25.5°C | 25.5°C | 77 | 9.4 | 12.713 h |
| May | 34.8°C27.1°C | 27.1°C | 128 | 11.8 | 13.213 h |
| June | 32.6°C27.1°C | 27.1°C | 272 | 22.3 | 13.513 h |
| July | 31.0°C26.2°C | 26.2°C | 352 | 29.3 | 13.413 h |
| August | 30.8°C25.9°C | 25.9°C | 307 | 29.1 | 12.913 h |
| September, selected | 30.7°C25.4°C | 25.4°C | 244 | 25.3 | 12.312 h |
| October | 30.2°C23.3°C | 23.3°C | 133 | 12.8 | 11.612 h |
| November | 28.5°C18.9°C | 18.9°C | 31 | 2.1 | 11.111 h |
| December | 25.9°C14.8°C | 14.8°C | 9.8 | 1.0 | 10.811 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
September in nearby cities
- Kolkata in SeptemberIndia · 16 kmHigh 30.8°C · Low 25.4°C · 250 mm rain
- Howrah in SeptemberIndia · 19 kmHigh 30.8°C · Low 25.4°C · 250 mm rain
- Maheshtala in SeptemberIndia · 20 kmHigh 30.8°C · Low 25.4°C · 250 mm rain
- Budge Budge in SeptemberIndia · 26 kmHigh 30.8°C · Low 25.4°C · 250 mm rain
- Pānihāti in SeptemberIndia · 29 kmHigh 30.8°C · Low 25.3°C · 242 mm rain
- Bārāsat in SeptemberIndia · 32 kmHigh 30.8°C · Low 25.4°C · 240 mm rain
- Rishra in SeptemberIndia · 33 kmHigh 30.9°C · Low 25.3°C · 242 mm rain
- Uluberiya in SeptemberIndia · 34 kmHigh 30.8°C · Low 25.4°C · 237 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 Rajpur Sonarpur) is explained once on the Rajpur Sonarpur year overview and on the Sources, method and limits page.