Climate averages 1991–2020
Sonārgaon weather
in September.
A hot, very wet month: the joint 5th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Sonārgaon: daytime highs average 30.7°C and nights cool to about 25.3°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 263 mm of rain on roughly 25 days, which makes September a very wet month (the 8th 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 Narayanganj (12 km away). In September its highs average 30.5°C, about as warm as Sonārgaon, with 259 mm of rain.
Among the 63 cities listed in Bangladesh, Sonārgaon ranks joint 26th of 63 for the warmest September highs and joint 26th of 63 for the driest September (rainfall, lowest first). The mean September high of those 63 cities is 30.5°C; Sonārgaon is 0.2°C warmer than that mean.
From September to October, average highs fall by 0.6°C to 30.1°C, and monthly rainfall falls from 263 mm to 144 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
Sonārgaon climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.4°C13.5°C | 13.5°C | 6.0 | 1.2 | 10.911 h |
| February | 27.5°C16.3°C | 16.3°C | 19 | 3.1 | 11.311 h |
| March | 31.6°C20.8°C | 20.8°C | 65 | 6.0 | 12.012 h |
| April | 32.4°C23.9°C | 23.9°C | 167 | 14.3 | 12.713 h |
| May | 31.9°C25.3°C | 25.3°C | 316 | 22.2 | 13.313 h |
| June | 31.1°C26.0°C | 26.0°C | 363 | 26.7 | 13.614 h |
| July | 30.4°C25.8°C | 25.8°C | 343 | 28.8 | 13.413 h |
| August | 30.7°C25.7°C | 25.7°C | 264 | 28.3 | 13.013 h |
| September, selected | 30.7°C25.3°C | 25.3°C | 263 | 25.2 | 12.312 h |
| October | 30.1°C23.5°C | 23.5°C | 144 | 14.8 | 11.612 h |
| November | 28.1°C19.1°C | 19.1°C | 25 | 2.2 | 11.011 h |
| December | 25.4°C15.1°C | 15.1°C | 11 | 1.0 | 10.711 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
- Narayanganj in SeptemberBangladesh · 12 kmHigh 30.5°C · Low 25.4°C · 259 mm rain
- Dhaka in SeptemberBangladesh · 22 kmHigh 30.6°C · Low 25.3°C · 263 mm rain
- Kafrul in SeptemberBangladesh · 29 kmHigh 30.8°C · Low 25.2°C · 256 mm rain
- Narsingdi in SeptemberBangladesh · 32 kmHigh 30.7°C · Low 25.1°C · 274 mm rain
- Tungi in SeptemberBangladesh · 35 kmHigh 30.8°C · Low 25.1°C · 266 mm rain
- Savar in SeptemberBangladesh · 43 kmHigh 30.8°C · Low 25.3°C · 256 mm rain
- Gazipur in SeptemberBangladesh · 43 kmHigh 30.8°C · Low 25.0°C · 266 mm rain
- Chāndpur in SeptemberBangladesh · 47 kmHigh 30.2°C · Low 25.4°C · 258 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 Sonārgaon) is explained once on the Sonārgaon year overview and on the Sources, method and limits page.
Dhaka lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.