ClimateForecastDecemberJanuary >>

Viseu Climate by Month

The temperature in Viseu can vary greatly throughout the year. The temperatures shift from warm to mild. It also experiences much rainfall throughout the year. Now, let’s break down all the climate details for a clearer picture.

Average day and night temperature

Depending on the time of the year, temperatures range from comfortable to moderate in Viseu. Average daytime temperatures reach a comfortable 29°C in August. In January, the coolest month of the year, temperatures drop to a moderate 12°C. At night, expect cooler temperatures, averaging 4°C during this month.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Viseu has a relatively rainy climate with high precipitation levels, averaging 1118 mm of rainfall annually. Viseu can be quite wet during October, receiving approximately 150 mm of precipitation over 13 rainy days.

In contrast July, experiences much drier conditions, with 17 mm of rainfall, spread across 6 rainy days.

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

Sunshine over the year

Viseu can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 11.5 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 3.5 hours of sunlight per day.

Monthly hours of sunshine

Data from: Penhas Douradas, Portugal (40 KM, 25 Miles).

Daily hours of sunshine

Data from: Penhas Douradas, Portugal (40 KM, 25 Miles).

The best time of year to visit Viseu in Portugal

During the months of May, June, September and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is summer in Viseu?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Viseu?
    August has an average maximum temperature of 29°C and is the warmest month of the year.
  • Which is the coldest month in Viseu?
    The coldest month is January with an average maximum temperature of 12°C.
  • Which is the wettest month in Viseu?
    October tops the wettest month list with 150 mm of rainfall.
  • Which is the driest month in Viseu?
    July is the driest month with 17 mm of precipitation.
  • Which is the sunniest month in Viseu?
    July is the sunniest month with an average of 345 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Viseu

    Wed   Dec 11
    12°C | 2°C
    NE 18 km/h
    partly cloudy and no rain

    partly cloudy and no rain

    Thu   Dec 12
    10°C | 2°C
    NE 14 km/h
    almost clear and no rain

    almost clear and no rain

    Fri   Dec 13
    10°C | 1°C
    S 14 km/h
    broken clouds and no rain

    broken clouds and no rain