Average annual temperature is 13.1 °C
Absolute maximum temperature: 37.7 °C
Absolute minimum temperature: -3.8 °C
Number of sunny days: 208 days
Number of rainy days: 156 days
Number of snow days: 1 day
Look at detailed online map of Arnas
* Weather data for Arnas 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) | 11.4 | 13.9 | 20.7 | 25.6 | 26.3 | 31.1 | 31.9 | 37.7 | 29.6 | 29.8 | 17.9 | 14.1 |
| Average daytime temperature (°C) | 8.0 | 9.7 | 13.6 | 19.1 | 20.2 | 23.6 | 27.4 | 29.5 | 22.2 | 19.7 | 12.8 | 8.6 |
| Average temperature (°C) | 4.7 | 5.0 | 9.1 | 13.2 | 14.7 | 18.6 | 20.5 | 22.3 | 17.2 | 15.8 | 9.8 | 5.6 |
| Average night temperature (°C) | 1.7 | 1.3 | 5.1 | 7.5 | 9.5 | 14.0 | 14.1 | 15.6 | 12.7 | 12.1 | 7.4 | 3.0 |
| Absolute minimum temperature (°C) | -2.8 | -3.3 | -3.8 | 2.2 | 5.8 | 10.7 | 10.2 | 10.7 | 7.7 | 6.0 | 2.9 | -1.5 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| 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) | 6.5 | 8.9 | 8.5 | 10.6 | 11.9 | 12.7 | 13.3 | 12.5 | 10.1 | 6.4 | 5.8 | 5.8 |
| Precipitation (mm) | 126 | 7 | 72 | 14 | 125 | 75 | 2 | 1 | 79 | 207 | 163 | 68 |
| Sunny days | 16 | 21 | 14 | 20 | 16 | 12 | 26 | 30 | 13 | 12 | 12 | 16 |
| Rainy days | 14 | 7 | 17 | 10 | 15 | 18 | 5 | 1 | 17 | 19 | 18 | 15 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Arnas during the most sunny months:
The largest precipitation sum in Arnas is at