Temperatures in May
It's pleasantly warm in May in Porto with an average temperature of 22°C. Temperatures this month range from a low of 20°C to a high of 25°C. At night, you can expect temperatures between 9°C and 15°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Porto in May. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of May
The month of May starts in Porto with warm temperatures, averaging around 22°C during the day and nights close to 12°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Mid-May
By mid-May, the average daytime temperature stays the same at 22°C, with nights close to 13°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of May
By the end of May, the average daytime temperature in Porto will be around 24°C, with nights close to 14°C. A shower might show up, but overall the weather will be dry and sunny.
Water temperature
The water temperature at Porto is 19°C this month. Refreshing if you fancy a swim.
Precipitation in May
In May, there is an average of 83 mm of precipitation, spread over 9 days. The wind speed is around 4 Bft, mostly coming from the Southwest.
The average precipitation chance is 28% per day this month. Though it seems pretty low, 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 May for Porto. 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.
Porto in May |
London | ||
|---|---|---|---|
 Average Temperature |
22°C | 18°C | |
 High Temp |
25°C | 21°C | |
| Low Temp |
20°C | 15°C | |
 Total Precipitation |
83 mm | 46 mm | |
| Rainy Days |
9 days | 8 days | |
April
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is May a good time to visit Porto?
Want nice weather? Then May is a great time to be in Porto. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for Porto in May
With 32°C, Porto hit the highest temperature in the last 10 years in May 2020. The lowest daytime temperature in this month was 12°C in 2014. The extreme night temperatures ranged from a low of 4°C to a high of 21°C.
Check out the climate of Porto 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 May in Porto
This chart shows the average daily temperatures, both day and night, for each day in May in Porto, 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.
Weather experiences in May in Porto
Good
Sunny days interspersed with light rain made the event inter... more
Daily Precipitation in May in Porto
The chart below shows the average daily precipitation in May for Porto, 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 May, you can expect around 9 days of rain in Porto.
Daily UV Index in May in Porto
This chart shows the average daily UV index in May in Porto, 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 May in Porto Over the Years
This chart shows the average temperature in May in Porto, measured in degrees Celsius, over the past years.
Total Precipitation in May in Porto Over the Years
This chart shows the average precipitation in May in Porto, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in May for Porto
Click on a specific day in May for detailed info on the typical weather on that day in Porto. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in Porto
The weather in May in Porto is rated 4 out of 5 stars by 1 visitor. Have you been to Porto? Share your weather experience to help other visitors.
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Sunny days interspersed with light rain made the event interesting. A jersey may rarely be worn.— This text is automatically translated to English
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Average Weather in Porto by Month
Click on a month below to see detailed weather info for Porto. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
