Cascais weather live forecast

Today's maximum temperature in Cascais is expected to be 19°C. Select a day from the live weather forecast for Cascais, Portugal for more weather parameters.

Monday
18th May
19

12

8

8
Tuesday
19th May
21

13

6

8
Wednesday
20th May
28

14

14

8
Thursday
21st May
27

15

14

7
Friday
22nd May
26

17

13

8

5-day weather forecast updated at 04:02 on Monday 18th 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 Monday 18th May 2026

Expect scattered clouds in Cascais, Portugal with a maximum temperature of 19°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 20 kph from the north-west.

19
°C maximum temperature
12
°C minimum temperature
scattered clouds
8
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
19
°C wind chill
20
kph wind from NW

Cascais weather for Tuesday 19th May 2026

Expect broken clouds in Cascais, Portugal with a maximum temperature of 21°C, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the north-west.

21
°C maximum temperature
13
°C minimum temperature
broken clouds
6
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
0
no heat & humidity
21
kph wind from NW

Cascais weather for Wednesday 20th May 2026

Expect clear skies in Cascais, Portugal with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the north.

28
°C maximum temperature
14
°C minimum temperature
clear skies
14
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
18
kph wind from N

Cascais weather for Thursday 21st May 2026

Expect clear skies in Cascais, Portugal with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 7 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the north.

27
°C maximum temperature
15
°C minimum temperature
clear skies
14
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
15
kph wind from N

Cascais weather for Friday 22nd May 2026

Expect scattered clouds in Cascais, Portugal with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the north.