The temperatures in Chittagong during September are extremely high, between 27°C and hot as 32°C, drinking water regularly is advisable.
There’s going to be many days of rain during the month of September in Chittagong.
Chittagong should expect an average of 15 to 22 days of rain, so be sure to bring along a waterproof jacket to stay dry this month!
Our weather forecast can give you a great sense of what weather to expect in Chittagong in September 2025.
If you’re planning to visit Chittagong in the near future, we highly recommend that you review the 14 day weather forecast for Chittagong before you arrive.