PortugalWhat’s the climate like in 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.
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.
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 go for a sun holiday to Viana do Castelo 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.
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.
- Average yearly temperature: 20°C
- Highest temperature: 25°C in July and August
- Lowest temperature: 14°C in January
- Precipitation: 1377 mm per year, averaging 115 mm per month
- Driest months: 15 mm in July, 25 mm in August and 40 mm in June
- Wettest months: 210 mm in November, 186 mm in January and 185 mm in December
Table of Contents
Average Temperature per Month in Viana do Castelo
This graph shows the average maximum temperatures per month in Viana do Castelo, Portugal. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Viana do Castelo
This graph shows how much rainfall Viana do Castelo, Portugal, gets on average per month. Rainfall is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of rainfall is measured in millimeters, and the average is calculated based on the recorded rainfall per month from past years.
Average UV Index per Month in Viana do Castelo
This graph 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.
Yearly Temperature in Viana do Castelo
This graph shows the average yearly temperature in Viana do Castelo, Portugal. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Viana do Castelo
This chart shows the total yearly precipitation in Viana do Castelo, Portugal, over the past few years. The total yearly precipitation, measured in millimeters, is the sum of all the rain that fell in the twelve months of that year.
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.
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