Climate averages 1991–2020
Chattogram weather
in August.
A hot, very wet month: the 7th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Chattogram: daytime highs average 28.7°C and nights cool to about 25.6°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 454 mm of rain on roughly 29 days, which makes August a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 54 min on an average August day.
The nearest other city in this atlas is Hāthazāri (19 km away). In August its highs average 29.0°C, about as warm as Chattogram, with 440 mm of rain.
Among the 63 cities listed in Bangladesh, Chattogram ranks 62nd of 63 for the warmest August highs and 60th of 63 for the driest August (rainfall, lowest first). The mean August high of those 63 cities is 30.7°C; Chattogram is 1.9°C cooler than that mean.
From August to September, average highs rise by 0.3°C to 29.0°C, and monthly rainfall falls from 454 mm to 340 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Chattogram climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 23.9°C15.8°C | 15.8°C | 6.2 | 0.8 | 10.911 h |
| February | 26.4°C18.0°C | 18.0°C | 14 | 1.8 | 11.411 h |
| March | 29.4°C22.1°C | 22.1°C | 46 | 4.4 | 12.012 h |
| April | 30.5°C25.0°C | 25.0°C | 98 | 9.4 | 12.713 h |
| May | 30.3°C26.0°C | 26.0°C | 291 | 20.5 | 13.213 h |
| June | 29.2°C26.0°C | 26.0°C | 583 | 26.8 | 13.513 h |
| July | 28.5°C25.6°C | 25.6°C | 606 | 29.3 | 13.413 h |
| August, selected | 28.7°C25.6°C | 25.6°C | 454 | 28.7 | 12.913 h |
| September | 29.0°C25.4°C | 25.4°C | 340 | 25.6 | 12.312 h |
| October | 29.0°C24.5°C | 24.5°C | 203 | 17.3 | 11.712 h |
| November | 27.3°C21.1°C | 21.1°C | 48 | 3.9 | 11.111 h |
| December | 24.7°C17.4°C | 17.4°C | 12 | 1.2 | 10.811 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Hāthazāri in AugustBangladesh · 19 kmHigh 29.0°C · Low 25.4°C · 440 mm rain
- Bibir Hat in AugustBangladesh · 39 kmHigh 29.3°C · Low 25.2°C · 396 mm rain
- Rangamati in AugustBangladesh · 50 kmHigh 30.1°C · Low 24.7°C · 275 mm rain
- Karnaphuli in AugustBangladesh · 57 kmHigh 29.9°C · Low 25.0°C · 275 mm rain
- Feni in AugustBangladesh · 87 kmHigh 29.8°C · Low 25.2°C · 354 mm rain
- Maijdi in AugustBangladesh · 95 kmHigh 29.8°C · Low 25.4°C · 362 mm rain
- Cox’s Bāzār in AugustBangladesh · 102 kmHigh 28.3°C · Low 25.2°C · 466 mm rain
- Lākshām in AugustBangladesh · 124 kmHigh 30.1°C · Low 25.3°C · 287 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Chattogram) is explained once on the Chattogram year overview and on the Sources, method and limits page.