Average high
31.1°
Sylhet weather in May
Pre-monsoon summer · 2020–2024 averages
May in Sylhet is pre-monsoon summer: days average 31.1°C and nights 23.1°C, with about 463 mm of rain over 22 days and roughly 9 hours of sunshine a day. Around mid-month the sun rises at 5:08 AM and sets at 6:28 PM, a 13.3-hour day.
Average low
23.1°
Rainfall
463 mm
Rainy days
22
Sunshine / day
9 h
Days ≥ 35°C
1
Hottest day (2020–24)
37°
Coldest night (2020–24)
20°
Wettest single day
182 mm
Sunrise
5:08 AM
Sunset
6:28 PM
Day length
13.3 h
What to expect
- Warm days, with highs around 31.1°C.
- As wet as the monsoon: about 463 mm of rain over 22 days, often as heavy afternoon or overnight downpours.
- Roughly 9 hours of sunshine a day.
- Nor'westers (kalboishakhi) can bring sudden squalls, hail and lightning in the late afternoon.
- Flash floods from upstream hills can hit the haor basin in April and May, ahead of the Boro harvest.
What to pack
- an umbrella or raincoat and quick-drying footwear
- waterproof covers for phones and documents
Compared with the rest of Bangladesh
In May, Sylhet ranks 1st of 64 districts for rainfall — roughly 207 mm wetter than the national average; the wettest district this month is Sylhet (463 mm) and the driest Lakshmipur (177 mm). For heat it ranks 60th, with highs 1.5° below the national mean; Chapai Nawabganj is the hottest district in May (34.1°C) and Panchagarh has the coldest nights (22.5°C).
Compared with the months around it
May is about as warm as April, with roughly 197 mm more rain. June then turns cooler and wetter.
What is the weather like in Sylhet in May?
May in Sylhet is pre-monsoon summer: days average 31.1°C and nights 23.1°C, with about 463 mm of rain over 22 days and roughly 9 hours of sunshine a day. Around mid-month the sun rises at 5:08 AM and sets at 6:28 PM, a 13.3-hour day.
Is May a good time to visit Sylhet?
It is peak monsoon, with about 463 mm of rain. Good for haors, waterfalls and green landscapes; poor for beaches and hill trekking.
Does it rain in Sylhet in May?
Yes — on about 22 days, around 463 mm in total; the wettest single day in 2020–24 brought 182 mm.
How hot is Sylhet in May?
Average highs of 31.1°C and lows of 23.1°C; the hottest May day in 2020–24 reached 37°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 May · Farming weather