Average high
25.5°
Sylhet weather in December
Winter · 2020–2024 averages
December in Sylhet is winter: days average 25.5°C and nights 14°C, with about 27 mm of rain over 3 days and roughly 9.3 hours of sunshine a day. Around mid-month the sun rises at 6:29 AM and sets at 5:05 PM, a 10.6-hour day.
Average low
14°
Rainfall
27 mm
Rainy days
3
Sunshine / day
9.3 h
Nights ≤ 10°C
1
Hottest day (2020–24)
30.4°
Coldest night (2020–24)
9.6°
Wettest single day
40 mm
Sunrise
6:29 AM
Sunset
5:05 PM
Day length
10.6 h
What to expect
- Pleasant days: highs around 25.5°C.
- Cool, comfortable nights around 14°C.
- Mostly dry: only about 27 mm of rain across 3 days.
- Roughly 9.3 hours of sunshine a day.
- Dense morning fog is common; road, river and air travel often run late until mid-morning.
What to pack
- a light layer for early mornings
Compared with the rest of Bangladesh
In December, Sylhet ranks 22nd of 64 districts for rainfall — about the national average; the wettest district this month is Manikganj (67 mm) and the driest Rangpur (3 mm). For heat it ranks 24th, with highs about the same as the national mean; Bandarban is the hottest district in December (27.1°C) and Panchagarh has the coldest nights (12.9°C).
Compared with the months around it
December is about 3.7° cooler than November, with similar rainfall. January then turns cooler and stays about as wet.
What is the weather like in Sylhet in December?
December in Sylhet is winter: days average 25.5°C and nights 14°C, with about 27 mm of rain over 3 days and roughly 9.3 hours of sunshine a day. Around mid-month the sun rises at 6:29 AM and sets at 5:05 PM, a 10.6-hour day.
Is December a good time to visit Sylhet?
Yes — one of the best months: dry and comfortable (average 25.5°/14°C, only about 27 mm of rain).
Does it rain in Sylhet in December?
Very little — Sylhet averages 3 days of light rain in December, about 27 mm in total.
How cold is Sylhet in December?
Average lows of 14°C and highs of 25.5°C; the coldest December night in 2020–24 was 9.6°C, and about 1 night drop to 10°C or below. Cold by Bangladeshi standards, but a light jacket is enough.
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 December · Farming weather