Best year time to visit Viana do Castelo

General weather information about Viana do Castelo

Average annual temperature is 15.8 °C

Absolute maximum temperature: 28.2 °C

Absolute minimum temperature: 1.8 °C

Number of sunny days: 188 days

Number of rainy days: 177 days

Look at detailed online map of Viana do Castelo

* Weather data for Viana do Castelo Portugal is based on climate observations for 2026 year

Viana do Castelo air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)15.619.919.724.426.326.825.828.227.428.018.517.0
Average daytime temperature (°C)13.415.115.618.521.222.621.422.621.621.216.714.2
Average temperature (°C)10.610.413.015.117.519.518.919.919.118.714.711.9
Average night temperature (°C)7.96.610.411.513.816.616.317.316.716.213.09.6
Absolute minimum temperature (°C)2.11.82.37.610.914.514.215.113.211.88.45.4

Viana do Castelo monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.510.611.913.314.515.214.913.812.511.19.99.2
Daylight minimum duration (h)9.010.011.012.014.014.014.013.011.010.09.09.0
Sunshine mean duration (h)6.39.37.810.011.812.212.511.39.86.84.95.3
Precipitation (mm)21821824260922638121407264276
Sunny days15221015171822231311913
Rainy days166211514129817202118
Snow days000000000000

Viana do Castelo - weather forecast by months

Viana do Castelo weather in januaryViana do Castelo weather in februaryViana do Castelo weather in marchViana do Castelo weather in aprilViana do Castelo weather in mayViana do Castelo weather in juneViana do Castelo weather in julyViana do Castelo weather in augustViana do Castelo weather in septemberViana do Castelo weather in octoberViana do Castelo weather in novemberViana do Castelo weather in december

Best time to visit Viana do Castelo:

The best time to visit Viana do Castelo during the most sunny months:

  • May — 11.8(h)
  • June — 12.2(h)
  • July — 12.5(h)
  • August — 11.3(h)

The largest precipitation sum in Viana do Castelo is at

  • January — 218(mm)
  • March — 182(mm)
  • October — 407(mm)
  • November — 264(mm)
  • December — 276(mm)

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    Weather forecast in the closest towns to Viana do Castelo

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    Frequently asked questions

    When is the best time to visit Viana do Castelo?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Viana do Castelo.
    What is the weather like in Viana do Castelo?
    See average temperature, rainfall and daylight hours for Viana do Castelo by month in the table above.
    How many sunny days does Viana do Castelo have?
    The monthly weather statistics above show sunshine and rainfall patterns for Viana do Castelo throughout the year.