Average high
31.4°
Sylhet weather in August
Monsoon · 2020–2024 averages
August in Sylhet is monsoon: days average 31.4°C and nights 25.3°C, with about 611 mm of rain over 29 days and roughly 7.5 hours of sunshine a day. Around mid-month the sun rises at 5:26 AM and sets at 6:28 PM, a 13-hour day.
Average low
25.3°
Rainfall
611 mm
Rainy days
29
Sunshine / day
7.5 h
Days ≥ 35°C
1
Hottest day (2020–24)
36.1°
Coldest night (2020–24)
24°
Wettest single day
151 mm
Sunrise
5:26 AM
Sunset
6:28 PM
Day length
13 h
What to expect
- Warm days, with highs around 31.4°C.
- This is monsoon: about 611 mm of rain over 29 days, often as heavy afternoon or overnight downpours.
- Roughly 7.5 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 August, Sylhet ranks 2nd of 64 districts for rainfall — roughly 228 mm wetter than the national average; the wettest district this month is Cox's Bazar (675 mm) and the driest Rajshahi (276 mm). For heat it ranks 40th, with highs about the same as the national mean; Chapai Nawabganj is the hottest district in August (32.3°C) and Bandarban has the coldest nights (23.6°C).
Compared with the months around it
August is about as warm as July, with similar rainfall. September then turns hotter and drier.
What is the weather like in Sylhet in August?
August in Sylhet is monsoon: days average 31.4°C and nights 25.3°C, with about 611 mm of rain over 29 days and roughly 7.5 hours of sunshine a day. Around mid-month the sun rises at 5:26 AM and sets at 6:28 PM, a 13-hour day.
Is August a good time to visit Sylhet?
It is peak monsoon, with about 611 mm of rain. Good for haors, waterfalls and green landscapes; poor for beaches and hill trekking.
Does it rain in Sylhet in August?
Yes — on about 29 days, around 611 mm in total; the wettest single day in 2020–24 brought 151 mm.
How hot is Sylhet in August?
Average highs of 31.4°C and lows of 25.3°C; the hottest August day in 2020–24 reached 36.1°C, and about 1 day top 35°C.
Today's live forecast for Sylhet →
Month by month
| Months | High / Low | Rainfall | Rainy days | Sunshine / day |
|---|---|---|---|---|
| January | 23.7° / 12° | 19 mm | 3 | 9.2 |
| February | 26.3° / 13.6° | 34 mm | 4 | 9.2 |
| March | 30.1° / 17.6° | 111 mm | 9 | 8.7 |
| April | 31.2° / 20.9° | 266 mm | 17 | 9.1 |
| May | 31.1° / 23.1° | 463 mm | 22 | 9 |
| June | 30.6° / 24.5° | 854 mm | 29 | 6.7 |
| July | 31.7° / 25.4° | 606 mm | 31 | 7.7 |
| August | 31.4° / 25.3° | 611 mm | 29 | 7.5 |
| September | 32.1° / 25.2° | 336 mm | 23 | 9.2 |
| October | 30.8° / 23.2° | 300 mm | 16 | 9.1 |
| November | 29.2° / 17.7° | 19 mm | 3 | 10.3 |
| December | 25.5° / 14° | 27 mm | 3 | 9.3 |
Places to visit in Sylhet
Sylhet climate: the whole year · Bangladesh weather in August · Farming weather