Average annual temperature is 4.3 °C
Absolute maximum temperature: 20.6 °C
Absolute minimum temperature: -15.7 °C
Number of sunny days: 124 days
Number of rainy days: 135 days
Number of snow days: 106 days
Look at detailed online map of Dumai
* Weather data for Dumai China is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 10.5 | 10.6 | 7.3 | 11.9 | 19.8 | 20.5 | 20.6 | 19.4 | 18.5 | 17.7 | 11.1 | 7.9 |
| Average daytime temperature (°C) | 4.7 | 5.4 | 4.0 | 8.7 | 12.1 | 17.6 | 16.4 | 16.8 | 16.2 | 11.5 | 6.4 | 2.6 |
| Average temperature (°C) | -1.6 | -0.7 | -1.6 | 2.6 | 5.8 | 11.1 | 11.7 | 11.6 | 9.9 | 4.8 | 0.7 | -3.2 |
| Average night temperature (°C) | -7.1 | -5.8 | -7.1 | -3.4 | -0.4 | 4.8 | 7.5 | 7.0 | 3.6 | -1.1 | -4.4 | -9.2 |
| Absolute minimum temperature (°C) | -13.1 | -7.8 | -12.9 | -9.7 | -5.0 | 0.9 | 4.6 | 4.8 | 2.4 | -4.2 | -6.3 | -15.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 14.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.5 | 11.2 | 12.0 | 12.9 | 13.6 | 14.0 | 13.8 | 13.2 | 12.3 | 11.5 | 10.7 | 10.3 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 9.6 | 10.1 | 10.9 | 11.5 | 12.2 | 11.9 | 9.1 | 9.5 | 11.2 | 10.6 | 9.9 | 9.3 |
| Precipitation (mm) | 0 | 10 | 40 | 48 | 68 | 144 | 341 | 260 | 75 | 41 | 12 | 14 |
| Sunny days | 28 | 15 | 10 | 4 | 8 | 8 | 0 | 0 | 3 | 8 | 17 | 23 |
| Rainy days | 0 | 0 | 2 | 0 | 12 | 22 | 31 | 31 | 27 | 10 | 0 | 0 |
| Snow days | 3 | 13 | 19 | 26 | 11 | 0 | 0 | 0 | 0 | 13 | 13 | 8 |
The largest precipitation sum in Dumai is at