Temperatures in April
It's pleasantly warm in April in Viana do Castelo with an average temperature of 19°C. Temperatures this month range from a low of 17°C to a high of 20°C. At night, you can expect temperatures between 8°C and 11°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Viana do Castelo in April. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of April
The month of April starts in Viana do Castelo with mild temperatures, averaging around 19°C during the day and nights close to 10°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month.
Mid-April
By mid-April, the average daytime temperature rises to around 20°C, with nights close to 11°C. During this part of the month, you can expect regular precipitation, but there’ll also be some sunny days.
End of April
By the end of April, the average daytime temperature in Viana do Castelo will be around 19°C, with nights close to 11°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
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Water temperature
The water temperature at Viana do Castelo is 18°C this month. You can swim, but it's a bit on the chilly side.
Precipitation in April
In April, there is an average of 119 mm of precipitation, spread over 12 days. The wind speed is around 4 Bft, mostly coming from the Southwest.
The average precipitation chance is 39% per day this month. The weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in April for Viana do Castelo. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Viana do Castelo in April |
London | ||
|---|---|---|---|
 Average Temperature |
19°C | 15°C | |
 High Temp |
20°C | 18°C | |
| Low Temp |
17°C | 12°C | |
 Total Precipitation |
119 mm | 29 mm | |
| Rainy Days |
12 days | 7 days | |
March
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is April a good time to visit Viana do Castelo?
After some sun? Then April isn’t the best time to be in Viana do Castelo. The temperature is pleasant, but there’s too much chance of rain this month.
Temperature records for Viana do Castelo in April
With 28°C, Viana do Castelo hit the highest temperature in the last 10 years in April 2017. The lowest daytime temperature in this month was 9°C in 2019. The extreme night temperatures ranged from a low of 2°C to a high of 15°C.
Check out the climate of Viana do Castelo for all months and discover the best travel time
Curious about the climate in other parts of Portugal? Check out the weather and climate in places like Algarve, Lisbon, Albufeira, or have a look at other destinations in Portugal.
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Daily Temperature in April in Viana do Castelo
This chart shows the average daily temperatures, both day and night, for each day in April in Viana do Castelo, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in April in Viana do Castelo
The chart below shows the average daily precipitation in April for Viana do Castelo, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for April, you can expect around 12 days of rain in Viana do Castelo.
Daily UV Index in April in Viana do Castelo
This chart shows the average daily UV index in April in Viana do Castelo, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in April in Viana do Castelo Over the Years
This chart shows the average temperature in April in Viana do Castelo, measured in degrees Celsius, over the past years.
Total Precipitation in April in Viana do Castelo Over the Years
This chart shows the average precipitation in April in Viana do Castelo, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in April for Viana do Castelo
Click on a specific day in April for detailed info on the typical weather on that day in Viana do Castelo. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in April 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.
Or check out the climate of Viana do Castelo for all months at once
