Foz do Arelho Weather & Climate: Best Time to Visit

The climate in Foz do Arelho experiences moderate temperature changes, with mild shifts between seasons. Average maximum daytime temperatures range from a comfortable 25°C (77°F) in August, the warmest time of the year, to a moderate 15°C (59°F) during cooler months like January.

At night, you can expect temperatures ranging from 18°C (64°F) in August to around 10°C (50°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Foz do Arelho experiences moderate precipitation patterns, averaging 660 mm (26 in) yearly. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, November it receives moderate rainfall, averaging 94 mm (3.7 in) of precipitation, recorded across 14 rainy days. In contrast, the driest month July brings less rainfall, with 8.8 mm (0.3 in) over 3 rainy days. For more details, please visit our Foz do Arelho Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Foz do Arelho. While August receives considerable daily sunshine with up to 8.5 hours, February marks the darkest time of the year, where sunshine is scarce with only 4.1 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The city experiences its highest humidity in August, reaching 89%. In March, the humidity drops to its lowest level at 80%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year