Average annual temperature is 24.5 °C
Absolute maximum temperature: 38.5 °C
Absolute minimum temperature: 7.1 °C
Number of sunny days: 113 days
Number of rainy days: 252 days
Look at detailed online map of Hai Yen
* Weather data for Hai Yen Vietnam is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 31.7 | 31.4 | 37.1 | 33.7 | 38.5 | 37.7 | 36.5 | 34.3 | 33.6 | 33.4 | 30.8 | 29.2 |
| Average daytime temperature (°C) | 21.2 | 23.6 | 27.0 | 28.8 | 32.1 | 32.9 | 34.1 | 31.4 | 30.2 | 29.8 | 27.2 | 22.6 |
| Average temperature (°C) | 16.7 | 19.8 | 22.3 | 25.1 | 28.2 | 29.3 | 30.2 | 28.1 | 27.0 | 26.0 | 22.8 | 18.7 |
| Average night temperature (°C) | 12.4 | 16.6 | 18.7 | 22.3 | 25.1 | 26.4 | 27.1 | 25.5 | 24.6 | 22.8 | 19.0 | 15.0 |
| Absolute minimum temperature (°C) | 7.1 | 11.4 | 14.8 | 17.5 | 19.9 | 23.9 | 24.1 | 24.6 | 22.7 | 20.8 | 13.3 | 7.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 11.0 | 11.5 | 12.0 | 12.6 | 13.1 | 13.4 | 13.2 | 12.8 | 12.3 | 11.7 | 11.2 | 10.9 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 5.5 | 3.8 | 5.1 | 5.8 | 9.2 | 7.6 | 10.4 | 7.4 | 6.3 | 8.2 | 7.8 | 5.2 |
| Precipitation (mm) | 19 | 39 | 31 | 55 | 113 | 332 | 150 | 350 | 487 | 57 | 41 | 34 |
| Sunny days | 18 | 9 | 11 | 7 | 12 | 2 | 7 | 3 | 1 | 19 | 10 | 14 |
| Rainy days | 13 | 19 | 20 | 23 | 19 | 28 | 24 | 28 | 29 | 12 | 20 | 17 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Hai Yen during the most sunny months:
The largest precipitation sum in Hai Yen is at