Average high
29.1°
Cox's Bazar weather in September
Late monsoon, early autumn · 2020–2024 averages
September in Cox's Bazar is late monsoon, early autumn: days average 29.1°C and nights 27.2°C, with about 367 mm of rain over 25 days and roughly 8.3 hours of sunshine a day. Around mid-month the sun rises at 5:39 AM and sets at 5:57 PM, a 12.3-hour day.
Average low
27.2°
Rainfall
367 mm
Rainy days
25
Sunshine / day
8.3 h
Hottest day (2020–24)
30.9°
Coldest night (2020–24)
25.7°
Wettest single day
141 mm
Sunrise
5:39 AM
Sunset
5:57 PM
Day length
12.3 h
What to expect
- Pleasant days: highs around 29.1°C.
- This is monsoon: about 367 mm of rain over 25 days, often as heavy afternoon or overnight downpours.
- Roughly 8.3 hours of sunshine a day.
What to pack
- an umbrella or raincoat and quick-drying footwear
- waterproof covers for phones and documents
Compared with the rest of Bangladesh
In September, Cox's Bazar ranks 7th of 64 districts for rainfall — roughly 43 mm wetter than the national average; the wettest district this month is Panchagarh (435 mm) and the driest Kishoreganj (261 mm). For heat it ranks 64th, with highs 2.3° below the national mean; Kishoreganj is the hottest district in September (32.4°C) and Bandarban has the coldest nights (23.5°C).
Compared with the months around it
September is about 0.5° warmer than August, with roughly 308 mm less rain. October then turns similar and drier.
What is the weather like in Cox's Bazar in September?
September in Cox's Bazar is late monsoon, early autumn: days average 29.1°C and nights 27.2°C, with about 367 mm of rain over 25 days and roughly 8.3 hours of sunshine a day. Around mid-month the sun rises at 5:39 AM and sets at 5:57 PM, a 12.3-hour day.
Is September a good time to visit Cox's Bazar?
It is peak monsoon, with about 367 mm of rain. Good for haors, waterfalls and green landscapes; poor for beaches and hill trekking.
Does it rain in Cox's Bazar in September?
Yes — on about 25 days, around 367 mm in total; the wettest single day in 2020–24 brought 141 mm.
How hot is Cox's Bazar in September?
Average highs of 29.1°C and lows of 27.2°C; the hottest September day in 2020–24 reached 30.9°C.
Today's live forecast for Cox's Bazar →
Month by month
| Months | High / Low | Rainfall | Rainy days | Sunshine / day |
|---|---|---|---|---|
| January | 22.9° / 20.9° | 7 mm | 2 | 9.7 |
| February | 23.8° / 21.6° | 9 mm | 1 | 10.5 |
| March | 27.3° / 24.7° | 9 mm | 2 | 10.9 |
| April | 29.6° / 27.4° | 18 mm | 3 | 11.4 |
| May | 29.9° / 27.8° | 195 mm | 16 | 10.6 |
| June | 29.2° / 27.2° | 546 mm | 27 | 7.7 |
| July | 28.9° / 27.3° | 637 mm | 28 | 7.9 |
| August | 28.6° / 26.9° | 675 mm | 29 | 6.5 |
| September | 29.1° / 27.2° | 367 mm | 25 | 8.3 |
| October | 29.5° / 27.6° | 235 mm | 15 | 9.3 |
| November | 27.8° / 26° | 65 mm | 2 | 10.3 |
| December | 24.8° / 22.9° | 14 mm | 1 | 9.8 |
Places to visit in Cox's Bazar
TeknafSonadia IslandAdinath Temple, MaheshkhaliCox's Bazar Sea BeachInani BeachHimchariSaint Martin's Island
Cox's Bazar climate: the whole year · Bangladesh weather in September · Farming weather