Cox's Bazar weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Fair
Best time to visit: November – February
What is the weather like in Cox's Bazar in September?
In September, Cox's Bazar is hot: daytime highs average 29 °C, and even at night it stays warm at around 25 °C. The sea averages 29.3 °C – almost as warm as a bath. Expect around 4 hours of sunshine a day. It is the rainy season: rain falls on about 26 days, totalling 348 mm. On about 6 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a so-so month for a holiday in Cox's Bazar.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 42 | 42 | 48 |
| Day | 28° | 29° | 29° |
| Night | 25° | 25° | 25° |
| Sea | 29° | 29° | 30° |
| Sun | 3 h | 4 h | 6 h |
| Rain days | 30 | 26 | 16 |
More details for September
- Daylight
- 12 h 18 min05:38 – 17:56
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 30 daysdew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 87 %on averageAll months
- Hot days
- 6 days30 °C or moreAll months
- Time zone
- UTC+6Asia/Dhaka
How the score comes together
- Temperatureweight 50 %76 %
- Sunshineweight 20 %18 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Cox's Bazar in September: quick answers
Is Cox's Bazar hot in September?
Yes. In September, Cox's Bazar is hot: daytime highs average 29 °C and nights stay around 25 °C. On about 6 days the thermometer climbs to 30 °C or more.
Can you swim in Cox's Bazar in September?
Yes. In September the sea averages 29.3 °C – almost as warm as a bath.
Does it rain much in Cox's Bazar in September?
It rains often – on about 26 days, adding up to 348 mm.
Cox's Bazar month by month
The whole year in Cox's BazarAll destinations: BangladeshWhere to go in SeptemberSea temperature in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences