Climate averages 1991–2020
Sylhet weather
in May.
A hot, very wet month: the 5th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Sylhet: daytime highs average 29.8°C and nights cool to about 23.1°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 759 mm of rain on roughly 28 days, which makes May a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 20 min on an average May day.
The nearest other city in this atlas is Sunāmganj (51 km away). In May its highs average 29.0°C, 0.8°C cooler than Sylhet, with 751 mm of rain.
Among the 63 cities listed in Bangladesh, Sylhet ranks 62nd of 63 for the warmest May highs and 63rd of 63 for the driest May (rainfall, lowest first). The mean May high of those 63 cities is 32.0°C; Sylhet is 2.2°C cooler than that mean.
From May to June, average highs rise by 0.2°C to 30.0°C, and monthly rainfall rises from 759 mm to 953 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Sylhet climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 23.5°C11.6°C | 11.6°C | 10 | 1.8 | 10.811 h |
| February | 25.8°C13.7°C | 13.7°C | 48 | 4.7 | 11.311 h |
| March | 28.6°C17.4°C | 17.4°C | 186 | 11.2 | 12.012 h |
| April | 29.4°C20.9°C | 20.9°C | 559 | 21.4 | 12.713 h |
| May, selected | 29.8°C23.1°C | 23.1°C | 759 | 27.6 | 13.313 h |
| June | 30.0°C24.7°C | 24.7°C | 953 | 29.5 | 13.714 h |
| July | 30.1°C25.0°C | 25.0°C | 940 | 30.8 | 13.514 h |
| August | 30.4°C25.1°C | 25.1°C | 733 | 30.7 | 13.013 h |
| September | 30.1°C24.5°C | 24.5°C | 523 | 27.6 | 12.312 h |
| October | 29.3°C22.1°C | 22.1°C | 217 | 14.8 | 11.612 h |
| November | 27.3°C17.3°C | 17.3°C | 28 | 2.3 | 11.011 h |
| December | 24.7°C13.3°C | 13.3°C | 12 | 1.0 | 10.611 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Sunāmganj in MayBangladesh · 51 kmHigh 29.0°C · Low 22.5°C · 751 mm rain
- Habiganj in MayBangladesh · 74 kmHigh 31.1°C · Low 23.9°C · 502 mm rain
- Shillong in MayIndia · 74 kmHigh 22.8°C · Low 16.5°C · 453 mm rain
- Silchar in MayIndia · 94 kmHigh 30.3°C · Low 23.3°C · 417 mm rain
- Netrakona in MayBangladesh · 115 kmHigh 30.6°C · Low 23.5°C · 528 mm rain
- Kishorganj in MayBangladesh · 121 kmHigh 31.3°C · Low 24.1°C · 478 mm rain
- Brāhmanbāria in MayBangladesh · 128 kmHigh 31.6°C · Low 24.6°C · 393 mm rain
- Ashuganj City in MayBangladesh · 129 kmHigh 31.6°C · Low 24.6°C · 393 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Sylhet) is explained once on the Sylhet year overview and on the Sources, method and limits page.