Cascais weather live forecast

Today's maximum temperature in Cascais is expected to be 21°C. Select a day from the live weather forecast for Cascais, Portugal for more weather parameters.

Sunday
23rd Aug
21

20

2

7
Monday
24th Aug
23

20

5

8
Tuesday
25th Aug
23

20

5

7
Wednesday
26th Aug
23

19

5

6
Thursday
27th Aug
21

19

6

7

5-day weather forecast updated at 04:02 on Sunday 23rd August 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 Sunday 23rd August 2026

Expect isolated thunderstorms in Cascais, Portugal with a maximum temperature of 21°C, maximum UV of 7 (High) and 2 hours of bright sunshine. There are 10-20 mm of rainfall expected with 78% chance of some rain and a fresh breeze of 30 kph from the south.

21
°C maximum temperature
20
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
7
UV index (High)
78
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
30
kph wind from S

Cascais weather for Monday 24th August 2026

Expect isolated thunderstorms in Cascais, Portugal with a maximum temperature of 23°C, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 75% chance of some rain and a fresh breeze of 30 kph from the south-west.

23
°C maximum temperature
20
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
8
UV index (Very High)
75
% chance of some rain
<10
mm of rainfall expected
23
°C wind chill
30
kph wind from SW

Cascais weather for Tuesday 25th August 2026

Expect mostly cloudy with light rain in Cascais, Portugal with a maximum temperature of 23°C, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 16% chance of some rain and a gentle breeze of 13 kph from the west.

23
°C maximum temperature
20
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
7
UV index (High)
16
% chance of some rain
<2
mm of rainfall expected
23
°C wind chill
13
kph wind from W

Cascais weather for Wednesday 26th August 2026

Expect isolated thunderstorms in Cascais, Portugal with a maximum temperature of 23°C, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 64% chance of some rain and a moderate breeze of 23 kph from the west.

23
°C maximum temperature
19
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
6
UV index (High)
64
% chance of some rain
<10
mm of rainfall expected
23
°C wind chill
23
kph wind from W

Cascais weather for Thursday 27th August 2026

Expect sunshine and showers in Cascais, Portugal with a maximum temperature of 21°C, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 31% chance of some rain and a moderate breeze of 24 kph from the west.