Cascais weather live forecast

Today's maximum temperature in Cascais is expected to be 27°C. Select a day from the live weather forecast for Cascais, Portugal for more weather parameters.

Wednesday
20th May
27

13

14

UV9
Thursday
21st May
29

16

11

UV7
Friday
22nd May
30

18

5

UV7
Saturday
23rd May
24

16

13

UV8
Sunday
24th May
24

15

8

UV8

5-day weather forecast updated at 04:02 on Wednesday 20th May 2026 GMT

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The 5-day weather forecast for Portugal (Cascais) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Cascais weather forecast by day

Below are the detailed weather forecasts for Cascais for the next 5 days.

Cascais weather for Wednesday 20th May 2026

Expect clear skies in Cascais, Portugal with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north.

27
°C maximum temperature
13
°C minimum temperature
clear skies
14
hours of sunshine
UV9
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
19
kph wind from N

Cascais weather for Thursday 21st May 2026

Expect scattered clouds in Cascais, Portugal with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 7 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the north-east.

29
°C maximum temperature
16
°C minimum temperature
scattered clouds
11
hours of sunshine
UV7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
17
kph wind from NE

Cascais weather for Friday 22nd May 2026

Expect broken clouds in Cascais, Portugal with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the north.

30
°C maximum temperature
18
°C minimum temperature
broken clouds
5
hours of sunshine
UV7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
22
kph wind from N

Cascais weather for Saturday 23rd May 2026

Expect scattered clouds in Cascais, Portugal with a maximum temperature of 24°C, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 27 kph from the north.

24
°C maximum temperature
16
°C minimum temperature
scattered clouds
13
hours of sunshine
UV8
UV index (Very High)
0
mm of rainfall expected
0
no heat & humidity
27
kph wind from N

Cascais weather for Sunday 24th May 2026

Expect broken clouds in Cascais, Portugal with a maximum temperature of 24°C, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the north.