Temperatures in May
It's warm in May in Cascais with an average temperature of 23°C. Temperatures this month range from a low of 21°C to a high of 25°C. At night, you can expect temperatures between 13°C and 17°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Cascais 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 Cascais with warm temperatures, averaging around 23°C during the day and nights close to 15°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 rises to around 24°C, with nights close to 15°C. Not much precipitation expected during this period. It’s mostly dry with sunshine.
End of May
By the end of May, the average daytime temperature in Cascais will be around 25°C, with nights close to 16°C. Barely any chance of precipitation. The weather will mostly be dry with lots of sunshine.
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Water temperature
The water temperature at Cascais is 20°C this month. Refreshing if you fancy a swim.
Precipitation in May
In May, there is an average of 40 mm of precipitation, spread over 5 days. The wind speed is around 4 Bft, mostly coming from the West.
The precipitation chance averages 15% per day this month. Though that seems low, there are also a few days with a higher chance of precipitation.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in May for Cascais. 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.
Cascais in May |
London | ||
|---|---|---|---|
 Average Temperature |
23°C | 18°C | |
 High Temp |
25°C | 21°C | |
| Low Temp |
21°C | 15°C | |
 Total Precipitation |
40 mm | 46 mm | |
| Rainy Days |
5 days | 8 days | |
April
UV index
The UV index is a maximum of 9 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 Cascais?
Want nice weather? Then May is a great time to be in Cascais. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for Cascais in May
With 34°C, Cascais hit the highest temperature in the last 10 years in May 2019. The lowest daytime temperature in this month was 14°C in 2016. The extreme night temperatures ranged from a low of 9°C to a high of 23°C.
Check out the climate of Cascais 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 Cascais
This chart shows the average daily temperatures, both day and night, for each day in May in Cascais, 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 May in Cascais
The chart below shows the average daily precipitation in May for Cascais, 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 5 days of rain in Cascais.
Daily UV Index in May in Cascais
This chart shows the average daily UV index in May in Cascais, 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 Cascais Over the Years
This chart shows the average temperature in May in Cascais, measured in degrees Celsius, over the past years.
Total Precipitation in May in Cascais Over the Years
This chart shows the average precipitation in May in Cascais, 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 Cascais
Click on a specific day in May for detailed info on the typical weather on that day in Cascais. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in Cascais
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Average Weather in Cascais by Month
Click on a month below to see detailed weather info for Cascais. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
