Average temperature in September is 27.6 °C
Average daytime temperature is 31 °C
Average night temperature is 25 °C
Absolute maximum temperature: 33.5 °C
Absolute minimum temperature: 24.2 °C
Number of sunny days:
Number of rainy days: 30
Number of snow days:
Precipitation sum: 372 mm
* Weather data for Chattogram Bangladesh is based on climate observations for 2023 year
| September (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 30.7 | 30.5 | 31.1 | 32.3 | 30.5 | 32.1 | 30.7 | 29.2 | 31 | 31.3 | 30.6 | 31.2 | 32.1 | 29.6 | 30.9 | 31.5 | 31.9 | 29.1 | 31.2 | 30.2 | 30.4 | 30.4 | 30.4 | 31.3 | 31.6 | 33.3 | 32.4 | 33.5 | 29.5 | 30.9 |
| Apparent max temperature | 38.7 | 37.6 | 38.2 | 41.9 | 37.6 | 40.2 | 37.2 | 34.2 | 39.8 | 40.2 | 38.4 | 38.4 | 39.1 | 34.7 | 38 | 40.7 | 41.3 | 33.4 | 38.3 | 35.7 | 36.5 | 36.7 | 36.7 | 38.2 | 40.3 | 41.6 | 39 | 41.1 | 36 | 38 |
| Mean temperature | 27.9 | 27.5 | 27.4 | 28.2 | 28 | 27.8 | 27 | 26.4 | 28.1 | 27.9 | 27.1 | 27.3 | 27.9 | 27 | 27.7 | 28.1 | 27.9 | 26.4 | 27.6 | 27.1 | 27 | 27.3 | 27.3 | 27.7 | 28.3 | 28.8 | 28.5 | 28.9 | 26.9 | 27.1 |
| Apparent mean temperature | 30.7 | 29.8 | 31 | 31.6 | 32.2 | 29.5 | 28.2 | 29.2 | 30.8 | 30 | 30.3 | 29.2 | 28.6 | 29.8 | 29.8 | 32.1 | 30.2 | 29.5 | 29.6 | 29.2 | 29.9 | 30.2 | 29.4 | 30.3 | 31.7 | 28.9 | 31.6 | 31.8 | 29 | 29.9 |
| Minimum temperature | 25.2 | 24.6 | 25.2 | 25.2 | 25.8 | 25.1 | 24.6 | 24.6 | 25.2 | 24.8 | 24.7 | 24.9 | 25.6 | 25 | 24.6 | 25.6 | 24.6 | 24.9 | 25.7 | 25.3 | 24.9 | 24.7 | 24.2 | 24.7 | 25.5 | 24.2 | 25.1 | 25.5 | 25.3 | 24.8 |
| Apparent min temperature | 34.6 | 33.8 | 33.6 | 35 | 34.6 | 33.4 | 31.6 | 31.6 | 34.6 | 34.4 | 33 | 32.9 | 32.8 | 31.6 | 33.5 | 35.1 | 34.6 | 31.5 | 32.3 | 31.3 | 31.9 | 32.9 | 33.1 | 33.9 | 35.1 | 35.3 | 35 | 35.8 | 32.6 | 32.6 |
| September | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 12.6 | 12.6 | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 | 12.4 | 12.4 | 12.4 | 12.4 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12 | 12 | 12 | 12 |
| Sunshine duration (h) | 9.7 | 8.5 | 6.4 | 10.1 | 6.7 | 7.5 | 7.5 | 3.2 | 11.6 | 7.6 | 9.2 | 9 | 8 | 8.2 | 11.1 | 11 | 9.4 | 3.7 | 6.3 | 9.2 | 8.6 | 11 | 10.9 | 11.1 | 11.1 | 10.9 | 7.1 | 9.9 | 2.9 | 8.8 |
| Precipitation (mm) | 14.1 | 24.8 | 6.8 | 3.3 | 4.8 | 14.6 | 25 | 10.7 | 2.1 | 20.5 | 5.8 | 11 | 12 | 11.6 | 0.3 | 0.2 | 45.7 | 18.3 | 24.7 | 20.7 | 9.4 | 2.4 | 2.5 | 0.2 | 0.7 | 23.4 | 1.8 | 21.9 | 14.7 | 18.1 |
| Precipitation hours | 9 | 17 | 11 | 4 | 9 | 15 | 17 | 12 | 6 | 14 | 15 | 10 | 9 | 12 | 3 | 2 | 21 | 18 | 7 | 11 | 10 | 12 | 8 | 2 | 4 | 7 | 4 | 9 | 10 | 11 |
| Wind speed (m/s) | 10.8 | 9.8 | 10.5 | 10.1 | 13 | 14.1 | 18.2 | 19.3 | 12.2 | 12.3 | 13.5 | 16.7 | 18.8 | 21.1 | 17.4 | 11.4 | 13.1 | 16.9 | 23.3 | 23.1 | 20.7 | 17.8 | 14.6 | 13 | 11 | 11.1 | 11.7 | 13 | 14.3 | 18.6 |
In September 2023, the highest daytime temperature in Chattogram was 33.5°C.
While the minimum temperature at night dropped to 24.2°C.
The average nighttime and daytime temperatures during September in Chattogram are 25°C and 31°C respectively.
The precipitation sum in September is about 372 mm.