Weather in Dhaka

Dhaka is in Bangladesh at 23.7°N. The 2001–2020 NASA POWER daily record describes a monsoon climate with a sharp wet-dry split. April is the warmest month (average 30.0°C, high 35.6°C) and January is the coolest (average 18.3°C, low 11.9°C).

Rain is the monsoon runs from April to October, inside an annual total of 2224 mm. The wettest month is July at 437 mm; the driest is January at 9 mm. On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are December, January, and February.

When the score favours a visit

The three months with the highest comfort score are December, January, and February: December (19.4°C average, 18 mm, 75% humidity); January (18.3°C average, 9 mm, 66% humidity); February (22.3°C average, 20 mm, 56% humidity). Those months sit across the year end, so they are listed in season order rather than January-to-December. The score rewards averages near 22°C, lower rainfall, and humidity near 60%. It is a climate score, not a festival or price calendar.

If you want the monsoon itself — fewer crowds, greener landscape, heavier rain — aim at April–October instead of the score.

How warm Dhaka gets

Dhaka has a 11.7°C gap between its coolest monthly average (18.3°C in January) and its warmest (30.0°C in April). That is a northern-hemisphere pattern.

Across the year the mean afternoon high is 30.3°C. If you want the smallest day–night shock, look at months where the high and low sit close together; April nights still hold 24.4°C.

Monsoon and dry months

The monsoon in Dhaka starts in April and ends in October (April, May, June, July, August, September, and October). July is the core of it at 437 mm. January is the other extreme, with 9 mm.

Humidity peaks near 90%. That usually lines up with the wetter months rather than the hottest ones.

The calendar in Dhaka

The year bottoms out in January. Plan for 11.9°C at night and 24.7°C in the afternoon. February stands apart from the months beside it: 29.1°C / 15.5°C and 20 mm. March brings 50 mm and 7 rainy days; temperatures run from 20.4°C to 33.8°C. April is when the monsoon typically starts in Dhaka: highs near 35.6°C, and rainfall jumps to 149 mm (15 rainy days). May: 33.9°C high, 26.0°C low, 292 mm rain, 76% humidity. June stands apart from the months beside it: 31.6°C / 26.6°C and 382 mm.

July is the wettest month — 437 mm and 30 rainy days, with 90% humidity. In August, Dhaka averages 30.9°C by day and 26.1°C at night, with 359 mm of rain. September: 30.5°C high, 25.6°C low, 283 mm rain, 89% humidity. By October the monsoon is ending. Dhaka still sees about 185 mm, but the next month is usually leaner. November stands apart from the months beside it: 27.6°C / 18.2°C and 38 mm. December: 24.9°C high, 13.9°C low, 18 mm rain, 75% humidity.

Dhaka and other cities in Bangladesh

Gazipur is about 32 km away: Dhaka is about as warm as Gazipur at the hot peak and 43 mm wetter over the year than Gazipur. Gazipur’s wettest month is July (404 mm) versus July here.

Khulna is about 132 km away: Dhaka is 1.6°C cooler than Khulna in its hottest month and 449 mm wetter over the year than Khulna. Khulna’s wettest month is July (374 mm) versus July here.

Chattogram is about 211 km away: Dhaka is 0.9°C warmer than Chattogram in its hottest month and 836 mm drier over the year than Chattogram. Chattogram’s wettest month is July (782 mm) versus July here.