Average annual temperature is 15.2 °C
Absolute maximum temperature: 38.7 °C
Absolute minimum temperature: 0.3 °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) | 15.2 | 19.0 | 23.2 | 27.0 | 29.2 | 31.6 | 30.3 | 38.7 | 31.8 | 31.7 | 19.9 | 17.1 |
| Average daytime temperature (°C) | 11.8 | 13.9 | 16.1 | 20.7 | 22.2 | 24.6 | 25.4 | 28.4 | 23.7 | 21.8 | 15.7 | 12.8 |
| Average temperature (°C) | 8.4 | 9.4 | 11.8 | 15.2 | 16.9 | 19.7 | 19.7 | 22.0 | 18.9 | 18.0 | 12.8 | 9.4 |
| Average night temperature (°C) | 5.4 | 5.9 | 8.1 | 10.3 | 12.3 | 15.6 | 14.6 | 16.5 | 15.1 | 14.5 | 10.2 | 6.2 |
| Absolute minimum temperature (°C) | 1.7 | 0.3 | 1.0 | 4.4 | 8.9 | 12.9 | 10.6 | 11.8 | 9.9 | 8.3 | 5.8 | 0.6 |
| 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) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 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 | 8.3 | 10.5 | 11.0 | 11.9 | 12.6 | 12.1 | 9.6 | 6.3 | 5.8 | 6.0 |
| Precipitation (mm) | 260 | 16 | 163 | 46 | 109 | 135 | 9 | 6 | 191 | 399 | 286 | 116 |
| Sunny days | 15 | 22 | 12 | 19 | 15 | 12 | 26 | 27 | 11 | 12 | 11 | 13 |
| Rainy days | 16 | 6 | 19 | 11 | 16 | 18 | 5 | 4 | 19 | 19 | 19 | 18 |
| 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