Average temperature in September is 26.3 °C
Average daytime temperature is 30.8 °C
Average night temperature is 23.2 °C
Absolute maximum temperature: 33.7 °C
Absolute minimum temperature: 21.1 °C
Number of sunny days: 1
Number of rainy days: 29
Number of snow days:
Precipitation sum: 355 mm
* Weather data for Cao Bằng Vietnam 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 | 32.5 | 33.7 | 27.6 | 28.5 | 33 | 33 | 33.6 | 30.3 | 31.4 | 32.9 | 29.3 | 28.2 | 26.8 | 26.3 | 30.3 | 31.4 | 30.4 | 30.6 | 31.3 | 31.1 | 32.2 | 32.5 | 32.5 | 32.3 | 32.4 | 30.8 | 28.7 | 29.8 | 30.7 | 31.1 |
| Apparent max temperature | 37.6 | 36.8 | 32.4 | 34.2 | 38.9 | 40.1 | 40.5 | 37.1 | 39.3 | 39.7 | 36.5 | 34.8 | 31.4 | 31.5 | 35.3 | 38.1 | 37.8 | 38 | 37.8 | 36.9 | 38.8 | 39 | 38.1 | 38.2 | 39 | 35.2 | 35.2 | 35.6 | 38.1 | 38.1 |
| Mean temperature | 26.9 | 28.8 | 24.1 | 24.7 | 27.3 | 28.3 | 28 | 26.3 | 26.6 | 27.5 | 26 | 25.6 | 23.4 | 23.3 | 25.4 | 26.5 | 26.3 | 26.2 | 27.4 | 27.4 | 27.4 | 27.7 | 27.2 | 27.4 | 26.5 | 25.4 | 24.7 | 25.3 | 26.1 | 26.6 |
| Apparent mean temperature | 26.3 | 28.5 | 25.4 | 25.6 | 27 | 28.4 | 28.9 | 28.6 | 29.7 | 29.6 | 28.9 | 27.5 | 25.3 | 24.8 | 26.3 | 29.6 | 28.6 | 28 | 30.1 | 29.4 | 28.7 | 29 | 26.2 | 27.2 | 26.6 | 28.5 | 27.8 | 28.2 | 27 | 28.3 |
| Minimum temperature | 23 | 24.4 | 21.8 | 21.8 | 22.5 | 23.8 | 23.7 | 23.4 | 24.1 | 24 | 23.7 | 23.6 | 21.6 | 21.1 | 22.1 | 24 | 23.4 | 23.1 | 24.6 | 24.2 | 23.6 | 23.7 | 22.1 | 23.2 | 22.4 | 23.3 | 23 | 23.4 | 22.6 | 23.5 |
| Apparent min temperature | 31.7 | 32.3 | 27.9 | 29.5 | 32.9 | 34.1 | 34.3 | 32.3 | 32.8 | 33.9 | 32.1 | 31.4 | 27.7 | 27.9 | 29.8 | 32.5 | 32.1 | 31.9 | 32.9 | 33 | 33.1 | 33.4 | 32.4 | 32.4 | 32.3 | 30.9 | 30.2 | 30.6 | 31.9 | 32.4 |
| 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 | 12.4 | 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) | 11.4 | 11.8 | 2.4 | 3.8 | 11.8 | 11.8 | 11.7 | 9.9 | 8.1 | 11 | 8.3 | 5 | 1.7 | 0.1 | 8.9 | 9.6 | 9.6 | 9.7 | 10.5 | 9.7 | 10.6 | 11 | 10.6 | 11.1 | 11 | 5.2 | 3.5 | 6.3 | 10.6 | 10.9 |
| Precipitation (mm) | 1.2 | 0 | 33 | 5.3 | 0.6 | 2.2 | 0.4 | 20.2 | 24 | 6.8 | 20.5 | 65.2 | 55.6 | 13.9 | 0.4 | 3.9 | 2.9 | 3.8 | 1.3 | 1.1 | 5.4 | 0.8 | 0.4 | 3.5 | 4.6 | 24.1 | 30.9 | 14.4 | 8.3 | 0.2 |
| Precipitation hours | 4 | 0 | 16 | 5 | 3 | 11 | 2 | 18 | 10 | 13 | 14 | 23 | 24 | 13 | 4 | 14 | 14 | 10 | 9 | 10 | 11 | 4 | 4 | 3 | 7 | 22 | 21 | 15 | 14 | 2 |
| Wind speed (m/s) | 11.2 | 11.8 | 13.4 | 8 | 6.1 | 5.5 | 5.8 | 9.7 | 9.2 | 5.8 | 8.3 | 9.2 | 12.1 | 6.8 | 10.2 | 7.1 | 11 | 10.5 | 10.7 | 9 | 12.8 | 10.5 | 11.5 | 14.2 | 10.8 | 10.6 | 7 | 7.9 | 9.5 | 5.7 |
In September 2023, the highest daytime temperature in Cao Bằng was 33.7°C.
While the minimum temperature at night dropped to 21.1°C.
The average nighttime and daytime temperatures during September in Cao Bằng are 23.2°C and 30.8°C respectively.
The precipitation sum in September is about 355 mm.