Visit the biggest beach on Earth: Cox's Bazar
Cox's Bazar is the perfect destination if you're looking for a relaxing day at the beach or an adventure-filled vacation. With its laidback atmosphere and abundance of fun activities.
Chittagong in September averages 31°C (88°F) during the day and 26°C (79°F) at night. September is part of the rainy season, so frequent rainfall is typical.
September in Chittagong can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Pick a month to see the average temperature, rainfall and sunshine in Chittagong - and find the best time to visit.
38-year average (1983-2025)
Based on our historical records, temperatures in Chittagong typically stay consistent throughout September, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 26°C (79°F).
Browse day-by-day weather records for Chittagong spanning 50 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on 21 years of weather observations (2005-2026), these are the most extreme conditions recorded in Chittagong.
Find out more about the weather in Bangladesh and which places have the best travel conditions in this month. See all of Bangladesh in September →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm but pleasant conditions in Chittagong in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Chittagong climate overview or explore weather in Bangladesh.
Where to go in September - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
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