When to Visit Bangladesh

Bangladesh sits in one of the most weather-defined corners of South Asia. The Bay of Bengal funnels enormous volumes of moisture across a delta so flat and low-lying that even moderate rainfall can reshape the landscape. The climate is tropical monsoon. Understanding it means accepting that the country operates on a rhythm more dramatic than most destinations. A cool, dry winter. A punishing pre-monsoon heat build. A full monsoon that floods roads and swells rivers to several times their dry-season width. A brief, golden post-monsoon window that many experienced travelers consider the real secret of Bangladesh. Four seasons, roughly speaking, though the monsoon tends to dominate the calendar in a way that makes everything else feel like punctuation around it. What distinguishes Bangladesh's weather from neighboring countries is partly the scale of the monsoon and partly the flatness of the terrain. In the hills around Sylhet, rainfall can be substantially heavier than in Dhaka. The tea estates there often sit under their own low cloud cover for weeks at a stretch. Cox's Bazar on the Bay of Bengal coast gets sea breezes that soften the heat in winter and amplify the monsoon fury in summer. The broad delta region around Barisal and Khulna, home to the Sundarbans, floods so reliably each year that communities have built entire ways of life around the inundation. None of this is incidental to a visit. The weather in Bangladesh is part of what you're going to experience, not a backdrop to it. The year's most comfortable months cluster tightly. December through February offers the closest thing to universally agreeable conditions, with clear skies, minimal rain, and temperatures that feel pleasant without being cold. Then the heat ramps steadily through March. Peaks in April and May in a way that can wear you down. Gives way to the monsoon deluge from June through September. October is an underrated transition month. November tends to feel like a reward.