PortugalThe climate of Viana do Castelo
The current climate in Viana do Castelo features temperatures ranging from a high of 25°C to a low of 14°C throughout the year. The average yearly temperature is around 20°C. At night, temperatures in the colder months average around 6°C and in the warmer months around 16°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Viana do Castelo, Portugal.
Temperature records
The highest temperature recorded in Viana do Castelo in recent years was 39°C in May 2020. The lowest daytime temperature recorded was 7°C in January 2021.
Rainfall amount
On average, Viana do Castelo receives 1377 mm of precipitation each year. For comparison, New York gets 1142 mm of precipitation annually.
Curious about the weather in other parts of Portugal? Check out the climate and weather for spots like Algarve, Lisbon, Albufeira, or explore other destinations in Portugal.
Best time to visit Viana do Castelo?
The best time to visit Viana do Castelo for sunny weather is April through September. During this period, you'll have nice temperatures and not too much rain, making it a great time to visit Viana do Castelo. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
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Climate Table of Viana do Castelo
The climate table of Viana do Castelo shows the average temperatures, rainfall, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 14 | 15 | 17 | 19 | 21 | 23 | 25 | 25 | 24 | 21 | 16 | 15 |
| Temp. min (°C) | 7 | 7 | 8 | 10 | 13 | 15 | 16 | 16 | 15 | 13 | 9 | 8 |
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| Precipitation (mm) | 186 | 148 | 110 | 119 | 83 | 40 | 15 | 25 | 76 | 180 | 210 | 185 |
| UV Index | 3 | 4 | 5 | 6 | 6 | 7 | 8 | 6 | 5 | 4 | 3 | 2 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
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Temperature charts
These charts display the average temperatures in Viana do Castelo, Portugal. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Viana do Castelo
Yearly Temperature in Viana do Castelo
Precipitation charts
These charts show the average amount of precipitation in Viana do Castelo, Portugal. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Viana do Castelo
Total Yearly Precipitation in Viana do Castelo
UV index chart
This chart shows the average UV index per month in Viana do Castelo, Portugal. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Viana do Castelo
Weather experiences in Viana do Castelo
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Average weather in Viana do Castelo by month
Click on a month below to see detailed weather info for Viana do Castelo. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.