Gardening in Bangladesh: climate, frost dates and crops by region

None of the 8 cities of Bangladesh on this page had frost in 2016–2025, so gardens there follow warmth and rain rather than frost dates. The warmest month averages 35.6 °C by day in Rajshahi and 30.9 °C in Chittagong.

Climate zones of Bangladesh

By the days between the last spring frost and the first autumn frost.

Zone	Cities	Frost-free days	Last spring frost	First autumn frost
No frost in ten years	Rangpur, Sylhet, Mymensingh, Rajshahi, Dhaka, Khulna, Barisal, Chittagong	—	—	—

How the regions of Bangladesh differ

Splitting the cities in two — north (Rangpur, Sylhet, Mymensingh and Rajshahi) and south (Dhaka, Khulna, Barisal and Chittagong): the warmest month averages 32 °C by day in the north and 34 °C in the south; the north gets about 2,428 mm of rain a year and the south about 1,976 mm.

The gap between the warmest month’s days and the coldest month’s nights is widest in Rajshahi (23.9 °C) and smallest in Chittagong (16 °C): the smaller it is, the milder both winter and summer. Sylhet is the wettest of these cities with 4,050 mm a year, Rajshahi the driest with 1,607 mm.

Which crops suit which part of Bangladesh

Cities without a spring frost: months that suit each crop

Months whose average day is not above the highest temperature on the plant card and whose average night is not below its lowest.

City	Tomato	Cucumber	Bell Pepper	Eggplant	Watermelon
Rangpur	none	April–October	March and October, November	none	April–October
Sylhet	none	April–October	March and November	none	April–October
Mymensingh	none	March–October	November	none	March–October
Rajshahi	none	March and May–October	November	none	March and May–October
Dhaka	none	March–November	February and November	none	March–November
Khulna	none	March–November	February and November	none	March–November
Barisal	none	March–November	February and November	none	March–November
Chittagong	February and December	March–November	February, March and June–December	none	March–November

Cities of Bangladesh: weather in numbers

City	Frost-free days	Warmest month, day	Coldest month, night	Rain a year	Driest month	Places to buy
Rangpur	no frost	April, 31.9 °C	January, 11 °C	2,398 mm	November	21
Sylhet	no frost	August, 31.8 °C	January, 11.9 °C	4,050 mm	January	20
Mymensingh	no frost	April, 32.1 °C	January, 11.8 °C	2,458 mm	January	21
Rajshahi	no frost	April, 35.6 °C	January, 11.7 °C	1,607 mm	November	17
Dhaka	no frost	April, 33.9 °C	January, 12.4 °C	1,912 mm	January	43
Khulna	no frost	April, 34.3 °C	January, 12.8 °C	1,928 mm	January	17
Barisal	no frost	April, 34 °C	January, 13.2 °C	2,024 mm	January	15
Chittagong	no frost	April, 30.9 °C	January, 14.9 °C	2,377 mm	February	40

ERA5 2016–2025 via Open-Meteo, 25 km grid cell of each city; dates by the Greenly calendar and the plant cards.