Average annual temperature is 15.5 °C
Absolute maximum temperature: 34.1 °C
Absolute minimum temperature: -0.1 °C
Number of sunny days: 195 days
Number of rainy days: 170 days
Look at detailed online map of Castelo
* Weather data for Castelo 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) | 15.7 | 19.5 | 21.0 | 26.8 | 26.2 | 27.3 | 28.0 | 34.1 | 31.4 | 30.0 | 19.4 | 17.6 |
| Average daytime temperature (°C) | 13.1 | 15.1 | 15.8 | 19.2 | 21.1 | 22.9 | 23.2 | 25.1 | 23.0 | 22.0 | 16.8 | 13.9 |
| Average temperature (°C) | 9.9 | 10.1 | 12.4 | 14.9 | 17.2 | 19.3 | 19.1 | 20.7 | 19.0 | 18.3 | 14.0 | 10.5 |
| Average night temperature (°C) | 7.1 | 6.6 | 9.4 | 10.9 | 13.4 | 15.9 | 15.2 | 16.7 | 15.8 | 15.5 | 11.9 | 7.5 |
| Absolute minimum temperature (°C) | 1.7 | 2.1 | 2.2 | 6.7 | 10.7 | 13.4 | 13.1 | 13.9 | 11.2 | 11.9 | 6.3 | -0.1 |
| 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) | 6.3 | 9.1 | 7.9 | 10.3 | 11.9 | 12.2 | 12.8 | 11.5 | 10.1 | 6.8 | 5.4 | 5.7 |
| Precipitation (mm) | 230 | 6 | 154 | 36 | 78 | 44 | 16 | 6 | 156 | 317 | 223 | 169 |
| Sunny days | 14 | 22 | 9 | 16 | 18 | 16 | 24 | 26 | 13 | 12 | 11 | 14 |
| Rainy days | 17 | 6 | 22 | 14 | 13 | 14 | 7 | 5 | 17 | 19 | 19 | 17 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Castelo during the most sunny months:
The largest precipitation sum in Castelo is at