Average humidity in Viana do Castelo

On this page you find more information about the monthly relative humidity over the year in Viana do Castelo (Norte Region), Portugal.

Viana do Castelo's humidity levels vary throughout the year. The highest levels occur in January, reaching 81% (very high), while the lowest is recorded in July at 73%.

Throughout the year, the average humidity in Viana do Castelo is 77%.

Humidity plays an important role in how temperatures are felt. During the warmest month, August, the maximum average temperature is around 24°C (75°F). Combined with high humidity during this period, the temperature can feel even warmer than the thermometer shows.

During the coldest month, January, the maximum average temperature is around 14°C (57°F). This period has very high humidity. Check out our detailed temperature page for more information.