Average high
30.1°
Chattogram weather in September
Late monsoon, early autumn · 2020–2024 averages
September in Chattogram is late monsoon, early autumn: days average 30.1°C and nights 25.6°C, with about 332 mm of rain over 26 days and roughly 8.4 hours of sunshine a day. Around mid-month the sun rises at 5:39 AM and sets at 5:58 PM, a 12.3-hour day.
Average low
25.6°
Rainfall
332 mm
Rainy days
26
Sunshine / day
8.4 h
Hottest day (2020–24)
33.1°
Coldest night (2020–24)
23.5°
Wettest single day
171 mm
Sunrise
5:39 AM
Sunset
5:58 PM
Day length
12.3 h
What to expect
- Pleasant days: highs around 30.1°C.
- This is monsoon: about 332 mm of rain over 26 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 rest of Bangladesh
In September, Chattogram ranks 25th of 64 districts for rainfall — about the national average; the wettest district this month is Panchagarh (435 mm) and the driest Kishoreganj (261 mm). For heat it ranks 63rd, with highs 1.3° 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 0.6° warmer than August, with roughly 195 mm less rain. October then turns similar and drier.
What is the weather like in Chattogram in September?
September in Chattogram is late monsoon, early autumn: days average 30.1°C and nights 25.6°C, with about 332 mm of rain over 26 days and roughly 8.4 hours of sunshine a day. Around mid-month the sun rises at 5:39 AM and sets at 5:58 PM, a 12.3-hour day.
Is September a good time to visit Chattogram?
It is peak monsoon, with about 332 mm of rain. Good for haors, waterfalls and green landscapes; poor for beaches and hill trekking.
Does it rain in Chattogram in September?
Yes — on about 26 days, around 332 mm in total; the wettest single day in 2020–24 brought 171 mm.
How hot is Chattogram in September?
Average highs of 30.1°C and lows of 25.6°C; the hottest September day in 2020–24 reached 33.1°C.
Today's live forecast for Chattogram →
Month by month
| Months | High / Low | Rainfall | Rainy days | Sunshine / day |
|---|---|---|---|---|
| January | 24.4° / 14.8° | 16 mm | 2 | 9.6 |
| February | 26.5° / 16.1° | 4 mm | 1 | 9.9 |
| March | 30.7° / 20.8° | 17 mm | 4 | 10.2 |
| April | 32.1° / 24.9° | 44 mm | 7 | 10.9 |
| May | 31.4° / 25.5° | 182 mm | 18 | 10.2 |
| June | 29.8° / 25.8° | 400 mm | 26 | 7.7 |
| July | 29.9° / 25.9° | 366 mm | 28 | 7.7 |
| August | 29.5° / 25.5° | 527 mm | 29 | 6.6 |
| September | 30.1° / 25.6° | 332 mm | 26 | 8.4 |
| October | 30.4° / 24.6° | 155 mm | 15 | 9.5 |
| November | 28.8° / 20.6° | 37 mm | 2 | 10.2 |
| December | 25.8° / 16.7° | 23 mm | 2 | 9.4 |
Places to visit in Chattogram
Chattogram climate: the whole year · Bangladesh weather in September · Farming weather