Chattogram is warmest in April, averaging 34° by day and 25° at night. The wettest month is August with 806 mm, and the year brings about 3589 mm in total.
Month by month
| Month | High | Low | Rain | Sea | Daylight | Good for |
|---|---|---|---|---|---|---|
| January | 23° | 14° | 28 mm | 22° | 10.8 h | Sightseeing |
| February | 26° | 17° | 14 mm | 23° | 11.2 h | Beach weather |
| March | 31° | 21° | 53 mm | 26° | 11.8 h | Beach weather |
| April | 34° | 25° | 105 mm | 29° | 12.5 h | Mild |
| May | 32° | 26° | 384 mm | 30° | 13.1 h | Rainy season |
| June | 31° | 27° | 675 mm | 29° | 13.4 h | Rainy season |
| July | 31° | 26° | 549 mm | 29° | 13.2 h | Rainy season |
| August | 30° | 26° | 806 mm | 29° | 12.8 h | Rainy season |
| September | 31° | 26° | 519 mm | 30° | 12.1 h | Rainy season |
| October | 31° | 25° | 344 mm | 30° | 11.5 h | Rainy season |
| November | 28° | 20° | 78 mm | 27° | 10.9 h | Beach weather |
| December | 25° | 16° | 34 mm | 24° | 10.6 h | Beach weather |
High and low are average daily maximum and minimum, rain is typical monthly total, sea is the average surface temperature, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER and NOAA MUR — averages, not promises.
When to go
Beach weather: February, March, November and December — highs around 28°, nights no colder than 16°, and at most 78 mm of rain in a month. The sea sits at 23–27° then.
Walking the city: January — highs of 23–23° and no more than 28 mm of rain a month.
Wet season: May, June, July, August, September and October — up to 806 mm in a single month.