Cox’s Bāzār Weather in September
What's the weather like in Cox’s Bāzār (Chittagong) in September 2025?
The climate in Cox’s Bāzār during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in Cox’s Bāzār and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (87°F), whilst at night 25°C (77°F) is normal.
| Daytime temperature | 30.5°C 86.9°F |
|---|---|
| Nightly temperature | 24.9°C 76.8°F |
| Average temperature | 27.7°C 81.9°F |
| Daily sunshine | 4.1 hrs |
| Avg rainfall | 335 mm 13.2 ins |
| Rainy days | 17 days |
| Sea temperature | 29°C 84.3°F |
| Humidity | 84% |
| Windspeed | 5kph 3 mph |
On average September is the 4th wettest month of the year in Cox’s Bāzār with around 335mm 13.2 inches of rain making it a very wet time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.1 hours of sunshine per day.
September temperatures in Cox’s Bāzār
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Cox’s Bāzār in September 2025.
Other monthly averages
Best places to visit in September
Cox’s Bāzār weather stats
| Hottest month: | May | 31.8°C 89.2°F |
|---|---|---|
| Driest month: | January | 6mm 0.2ins |
| Sunniest month: | January | 9.3hrs |
| Coldest month: | January | 26.1°C 79°F |
| Wettest month: | July | 946mm 37.2ins |
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