Average high
32.3°
Sunamganj weather in September
Late monsoon, early autumn · 2020–2024 averages
September in Sunamganj is late monsoon, early autumn: days average 32.3°C and nights 25.5°C, with about 362 mm of rain over 23 days and roughly 8.6 hours of sunshine a day. Around mid-month the sun rises at 5:40 AM and sets at 6:00 PM, a 12.3-hour day.
Average low
25.5°
Rainfall
362 mm
Rainy days
23
Sunshine / day
8.6 h
Days ≥ 35°C
3
Hottest day (2020–24)
38.1°
Coldest night (2020–24)
23.7°
Wettest single day
81 mm
Sunrise
5:40 AM
Sunset
6:00 PM
Day length
12.3 h
What to expect
- Warm days, with highs around 32.3°C.
- This is monsoon: about 362 mm of rain over 23 days, often as heavy afternoon or overnight downpours.
- Roughly 8.6 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, Sunamganj ranks 12th of 64 districts for rainfall — roughly 38 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 3rd, with highs 0.9° above 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 198 mm less rain. October then turns cooler and drier.
What is the weather like in Sunamganj in September?
September in Sunamganj is late monsoon, early autumn: days average 32.3°C and nights 25.5°C, with about 362 mm of rain over 23 days and roughly 8.6 hours of sunshine a day. Around mid-month the sun rises at 5:40 AM and sets at 6:00 PM, a 12.3-hour day.
Is September a good time to visit Sunamganj?
It is peak monsoon, with about 362 mm of rain. Good for haors, waterfalls and green landscapes; poor for beaches and hill trekking.
Does it rain in Sunamganj in September?
Yes — on about 23 days, around 362 mm in total; the wettest single day in 2020–24 brought 81 mm.
How hot is Sunamganj in September?
Average highs of 32.3°C and lows of 25.5°C; the hottest September day in 2020–24 reached 38.1°C, and about 3 days top 35°C.
Today's live forecast for Sunamganj →
Month by month
| Months | High / Low | Rainfall | Rainy days | Sunshine / day |
|---|---|---|---|---|
| January | 23.5° / 12.8° | 12 mm | 2 | 8.9 |
| February | 25.6° / 14° | 29 mm | 4 | 9.1 |
| March | 29.9° / 18° | 59 mm | 8 | 9.2 |
| April | 31.5° / 21.7° | 174 mm | 15 | 9.2 |
| May | 31.2° / 23.5° | 462 mm | 22 | 8.8 |
| June | 30.8° / 24.6° | 891 mm | 29 | 6 |
| July | 31.9° / 25.6° | 573 mm | 31 | 7.3 |
| August | 31.7° / 25.6° | 560 mm | 30 | 7.4 |
| September | 32.3° / 25.5° | 362 mm | 23 | 8.6 |
| October | 31.1° / 23.6° | 325 mm | 16 | 9 |
| November | 29.4° / 18.5° | 10 mm | 2 | 10.1 |
| December | 25.7° / 14.8° | 13 mm | 2 | 9.2 |
Places to visit in Sunamganj
Sunamganj climate: the whole year · Bangladesh weather in September · Farming weather