Average annual temperature is 17.1 °C
Absolute maximum temperature: 42.2 °C
Absolute minimum temperature: 1.6 °C
Number of sunny days: 216 days
Number of rainy days: 149 days
Look at detailed online map of Foz da Isna
* Weather data for Foz da Isna 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) | 16.4 | 20.3 | 26.8 | 32.0 | 33.5 | 35.9 | 36.0 | 42.2 | 34.5 | 34.7 | 21.4 | 18.5 |
| Average daytime temperature (°C) | 13.4 | 15.5 | 18.7 | 24.5 | 25.0 | 28.1 | 30.4 | 33.0 | 26.1 | 24.6 | 17.7 | 14.6 |
| Average temperature (°C) | 9.5 | 10.5 | 13.6 | 17.9 | 19.1 | 21.9 | 22.7 | 24.8 | 20.6 | 20.0 | 14.1 | 10.3 |
| Average night temperature (°C) | 6.2 | 6.7 | 9.3 | 12.2 | 14.1 | 16.9 | 16.7 | 18.7 | 16.3 | 15.9 | 10.9 | 6.8 |
| Absolute minimum temperature (°C) | 2.2 | 1.6 | 2.2 | 7.5 | 11.2 | 13.5 | 14.6 | 14.4 | 12.4 | 9.6 | 5.2 | 2.7 |
| 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 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 14.9 | 14.7 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| 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) | 6.7 | 8.8 | 8.9 | 11.0 | 11.0 | 12.2 | 12.9 | 12.3 | 9.4 | 6.6 | 6.3 | 6.5 |
| Precipitation (mm) | 96 | 15 | 57 | 15 | 55 | 70 | 1 | 0 | 79 | 194 | 130 | 35 |
| Sunny days | 17 | 22 | 14 | 23 | 17 | 14 | 27 | 27 | 13 | 12 | 12 | 18 |
| Rainy days | 14 | 6 | 17 | 7 | 14 | 16 | 4 | 4 | 17 | 19 | 18 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Foz da Isna during the most sunny months:
The largest precipitation sum in Foz da Isna is at