Average high
31.4°
Bangladesh weather in September
Late monsoon, early autumn · 2020–2024 averages
September in Bangladesh is late monsoon, early autumn: days average 31.4°C and nights 25.6°C, with about 324 mm of rain over 25 days and roughly 8.4 hours of sunshine a day. Around mid-month the sun rises at 5:44 AM and sets at 6:03 PM, a 12.3-hour day.
Average low
25.6°
Rainfall
324 mm
Rainy days
25
Sunshine / day
8.4 h
Days ≥ 35°C
1
Hottest day (2020–24)
38.1° · Sunamganj
Coldest night (2020–24)
19.6° · Khulna
Wettest single day
223 mm · Faridpur
Sunrise
5:44 AM
Sunset
6:03 PM
Day length
12.3 h
What to expect
- Warm days, with highs around 31.4°C.
- This is monsoon: about 324 mm of rain over 25 days, often as heavy afternoon or overnight downpours.
- Roughly 8.4 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 months around it
September is about as warm as August, with roughly 59 mm less rain. October then turns cooler and drier.
September across the divisions
| Division | High / Low | Rainfall | Rainy days |
|---|---|---|---|
| Chattogram | 29.5° / 27.3° | 368 mm | 25 |
| Khulna | 31.3° / 25.6° | 386 mm | 27 |
| Rajshahi | 31.8° / 25.8° | 311 mm | 25 |
| Rangpur | 31.2° / 25.3° | 363 mm | 23 |
| Sylhet | 32.1° / 25.3° | 315 mm | 22 |
| Barishal | 30.6° / 25.9° | 340 mm | 26 |
| Dhaka | 31.9° / 25.8° | 282 mm | 26 |
| Mymensingh | 31.9° / 25.3° | 279 mm | 24 |
Where September is wettest, driest, hottest and coldest
The wettest district in September is Panchagarh (435 mm) and the driest Kishoreganj (261 mm); Kishoreganj is the hottest (average highs of 32.4°C) and Bandarban has the coldest nights (23.5°C).
What is the weather like in Bangladesh in September?
September in Bangladesh is late monsoon, early autumn: days average 31.4°C and nights 25.6°C, with about 324 mm of rain over 25 days and roughly 8.4 hours of sunshine a day. Around mid-month the sun rises at 5:44 AM and sets at 6:03 PM, a 12.3-hour day.
Is September a good time to visit Bangladesh?
It is peak monsoon, with about 324 mm of rain. Good for haors, waterfalls and green landscapes; poor for beaches and hill trekking.
Does it rain in Bangladesh in September?
Yes — on about 25 days, around 324 mm in total; the wettest single day in 2020–24 brought 223 mm (Faridpur).
How hot is Bangladesh in September?
Average highs of 31.4°C and lows of 25.6°C; the hottest September day in 2020–24 reached 38.1°C, and about 1 day top 35°C.
Month by month
| Months | High / Low | Rainfall | Rainy days | Sunshine / day |
|---|---|---|---|---|
| January | 23.7° / 12.9° | 11 mm | 2 | 9.3 |
| February | 26.7° / 14.7° | 16 mm | 2 | 9.9 |
| March | 31.5° / 19.5° | 40 mm | 6 | 10.3 |
| April | 34.2° / 23.4° | 83 mm | 9 | 10.5 |
| May | 32.6° / 24.7° | 256 mm | 19 | 9.6 |
| June | 31.8° / 26° | 416 mm | 27 | 7.4 |
| July | 31.7° / 26.1° | 344 mm | 28 | 8.4 |
| August | 31.3° / 25.8° | 383 mm | 28 | 7.8 |
| September | 31.4° / 25.6° | 324 mm | 25 | 8.4 |
| October | 30.8° / 23.7° | 213 mm | 16 | 9.2 |
| November | 28.8° / 18.5° | 21 mm | 2 | 10 |
| December | 25.3° / 14.9° | 24 mm | 1 | 9.3 |