Average annual temperature is 12.4 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: -4.6 °C
Number of sunny days: 196 days
Number of rainy days: 169 days
Look at detailed online map of Arca
* Weather data for Arca 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) | 12.2 | 15.7 | 20.1 | 24.9 | 26.1 | 29.4 | 29.1 | 36.7 | 28.8 | 28.5 | 17.7 | 14.0 |
| Average daytime temperature (°C) | 8.7 | 10.8 | 13.2 | 18.0 | 19.5 | 22.3 | 24.1 | 26.9 | 21.1 | 18.9 | 12.9 | 9.7 |
| Average temperature (°C) | 5.0 | 5.3 | 8.9 | 12.4 | 14.0 | 17.4 | 18.0 | 20.2 | 16.2 | 15.1 | 9.8 | 5.9 |
| Average night temperature (°C) | 1.8 | 1.0 | 5.0 | 7.0 | 9.0 | 13.0 | 12.2 | 13.9 | 11.9 | 11.3 | 7.0 | 2.6 |
| Absolute minimum temperature (°C) | -3.6 | -2.5 | -4.1 | 1.8 | 6.2 | 10.4 | 7.0 | 8.5 | 6.7 | 5.5 | 1.6 | -4.6 |
| 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 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 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) | 6.3 | 9.0 | 8.1 | 10.3 | 11.0 | 12.0 | 12.8 | 12.1 | 9.3 | 5.9 | 5.4 | 5.8 |
| Precipitation (mm) | 278 | 10 | 154 | 39 | 103 | 132 | 8 | 3 | 165 | 416 | 315 | 127 |
| Sunny days | 15 | 20 | 13 | 20 | 16 | 13 | 25 | 28 | 11 | 12 | 11 | 12 |
| Rainy days | 16 | 8 | 18 | 10 | 15 | 17 | 6 | 3 | 19 | 19 | 19 | 19 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Arca during the most sunny months:
The largest precipitation sum in Arca is at