Average annual temperature is 15.8 °C
Absolute maximum temperature: 37.9 °C
Absolute minimum temperature: -1.1 °C
Number of sunny days: 183 days
Number of rainy days: 182 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) | 16.0 | 21.1 | 22.4 | 26.7 | 28.6 | 31.7 | 32.2 | 37.9 | 32.2 | 32.0 | 20.3 | 17.0 |
| Average daytime temperature (°C) | 13.2 | 15.9 | 16.5 | 20.8 | 22.6 | 25.4 | 26.1 | 27.9 | 24.4 | 22.5 | 16.9 | 14.0 |
| Average temperature (°C) | 9.2 | 9.5 | 12.4 | 15.5 | 17.5 | 20.6 | 20.6 | 22.1 | 19.5 | 18.4 | 13.7 | 10.1 |
| Average night temperature (°C) | 5.5 | 3.8 | 8.5 | 10.1 | 12.4 | 16.1 | 15.4 | 16.8 | 15.3 | 14.6 | 11.3 | 6.6 |
| Absolute minimum temperature (°C) | -0.6 | -1.1 | -0.6 | 4.0 | 8.8 | 13.1 | 12.2 | 13.5 | 10.3 | 9.7 | 5.6 | -0.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 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) | 9.5 | 10.6 | 11.9 | 13.3 | 14.5 | 15.2 | 14.9 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.8 | 9.1 | 7.0 | 9.6 | 11.3 | 11.7 | 12.4 | 11.4 | 9.5 | 6.4 | 4.6 | 5.2 |
| Precipitation (mm) | 343 | 14 | 284 | 64 | 93 | 178 | 39 | 70 | 156 | 546 | 414 | 339 |
| Sunny days | 15 | 22 | 9 | 16 | 16 | 12 | 21 | 25 | 12 | 12 | 10 | 13 |
| Rainy days | 16 | 6 | 22 | 14 | 15 | 18 | 10 | 6 | 18 | 19 | 20 | 18 |
| 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