The weather in Bangladesh is hot and humid for most of the year, with day-to-day conditions determined by the monsoon. Accordingly, the year is divided into wet and dry seasons.
Monsoon season is from April to October, although rains sometimes continue into November. As the monsoon approaches, the temperature begins to climb in March, bringing stifling heat and humidity. During this time of year, temperatures often reach 95°F (35°C) inland, while coastal areas are slightly cooler at around 90°F (32°C). The heavy monsoon rains begin in late May or early June, cooling down the temperature a few degrees. These conditions persist until October when the monsoon begins to retreat.
December heralds the start of the winter, which continues into January. Temperatures drop to a more bearable level, with some days as cool as 68°F (20°C). Fog may occur during this time of year. These conditions don’t last long, though; by February, temperatures will begin to increase once more in the lead-up to monsoon season.
Expats should be mindful of the heat and stay out of the sun in the hottest hours. Be sure to stay hydrated. Floods can occur during monsoon season, so it’s best to be prepared and follow government directives in poor weather conditions.