Average annual temperature is 17.8 °C
Absolute maximum temperature: 42.3 °C
Absolute minimum temperature: 0.1 °C
Number of sunny days: 225 days
Number of rainy days: 140 days
Look at detailed online map of Onia
* Weather data for Onia Portugal is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 18.8 | 21.0 | 28.2 | 33.4 | 32.9 | 37.3 | 36.6 | 42.3 | 36.7 | 35.5 | 22.8 | 20.2 |
| Average daytime temperature (°C) | 14.8 | 16.8 | 20.0 | 26.1 | 26.4 | 29.8 | 30.7 | 32.9 | 27.7 | 26.1 | 19.4 | 15.7 |
| Average temperature (°C) | 10.5 | 10.8 | 14.3 | 18.5 | 19.9 | 22.8 | 23.2 | 24.9 | 21.6 | 20.6 | 15.2 | 11.1 |
| Average night temperature (°C) | 6.7 | 6.3 | 9.5 | 12.4 | 14.9 | 17.6 | 17.9 | 19.4 | 17.2 | 16.1 | 11.9 | 7.5 |
| Absolute minimum temperature (°C) | 1.4 | 1.2 | 0.1 | 8.8 | 12.7 | 14.4 | 16.1 | 16.7 | 13.6 | 11.8 | 4.6 | 1.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.7 | 12.0 | 13.2 | 14.3 | 14.8 | 14.6 | 13.7 | 12.4 | 11.2 | 10.1 | 9.5 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.3 | 9.0 | 9.2 | 11.1 | 12.1 | 12.7 | 13.1 | 12.2 | 10.0 | 7.7 | 6.8 | 6.4 |
| Precipitation (mm) | 56 | 27 | 23 | 14 | 22 | 32 | 0 | 1 | 42 | 135 | 65 | 33 |
| Sunny days | 20 | 16 | 16 | 23 | 16 | 16 | 29 | 28 | 15 | 12 | 15 | 19 |
| Rainy days | 11 | 12 | 15 | 7 | 15 | 14 | 2 | 3 | 15 | 19 | 15 | 12 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Onia during the most sunny months:
The largest precipitation sum in Onia is at