Climate averages 1991–2020

Sylhet weather
in March.

A hot, very wet month: the 8th warmest and the 5th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 28.6°C Daytime mean, March
Average low 17.4°C Night-time mean, March
Rainfall 186 mm 11 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Sylhet · average highYear overview

March is a hot month in Sylhet: daytime highs average 28.6°C and nights cool to about 17.4°C. By daytime temperature it is the 8th warmest of the 12 months.

Expect about 186 mm of rain on roughly 11 days, which makes March a very wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 00 min on an average March day.

The nearest other city in this atlas is Sunāmganj (51 km away). In March its highs average 27.9°C, 0.7°C cooler than Sylhet, with 155 mm of rain.

Among the 63 cities listed in Bangladesh, Sylhet ranks 62nd of 63 for the warmest March highs and 63rd of 63 for the driest March (rainfall, lowest first). The mean March high of those 63 cities is 31.3°C; Sylhet is 2.7°C cooler than that mean.

From March to April, average highs rise by 0.8°C to 29.4°C, and monthly rainfall rises from 186 mm to 559 mm.

The annual picture

March in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 5101520253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 10000

Averages 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

1991–2020
Monthly climate averages for Sylhet, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 23.5°C11.6°C11.6°C101.810.811 h
February 25.8°C13.7°C13.7°C484.711.311 h
March, selected 28.6°C17.4°C17.4°C18611.212.012 h
April 29.4°C20.9°C20.9°C55921.412.713 h
May 29.8°C23.1°C23.1°C75927.613.313 h
June 30.0°C24.7°C24.7°C95329.513.714 h
July 30.1°C25.0°C25.0°C94030.813.514 h
August 30.4°C25.1°C25.1°C73330.713.013 h
September 30.1°C24.5°C24.5°C52327.612.312 h
October 29.3°C22.1°C22.1°C21714.811.612 h
November 27.3°C17.3°C17.3°C282.311.011 h
December 24.7°C13.3°C13.3°C121.010.611 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

March in nearby cities

Distance from Sylhet

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 limits

How 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.