World Resorts Portugal Cascais Weather

Cascais 7 Days Forecast

17.05
sun
Day
61°F
SE 16 mph
Precip.
87%
Night
59°F
S 17 mph
Precip.
0%
18.05
mon
Day
61°F
SE 13 mph
Precip.
0%
Night
59°F
SE 9 mph
Precip.
0%
19.05
tue
Day
66°F
SE 9 mph
Precip.
0%
Night
63°F
S 12 mph
Precip.
0%
20.05
wed
Day
72°F
W 3 mph
Precip.
0%
Night
64°F
S 5 mph
Precip.
0%
21.05
thu
Day
73°F
W 4 mph
Precip.
0%
Night
68°F
NW 8 mph
Precip.
0%
22.05
fri
Day
75°F
NE 6 mph
Precip.
0%
Night
70°F
N 9 mph
Precip.
0%
23.05
sat
Day
72°F
NE 10 mph
Precip.
0%
Night
68°F
NW 6 mph
Precip.
0%

Sea water temperature in May, °F

Show year:
2026
2025
2024

The average sea water temperature in May of 2026 was 61.2°F. The highest and lowest sea temperatures during the month were 62.8°F and 59.7°F.

Air temperature in Cascais, °F

Precipitation total in Cascais, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Cascais

Sunniest months:
August 27 days
July 26 days
September 23 days
Warmest months:
August 76.5 °F
July 75.3 °F
September 74.8 °F
Warmest sea temp:
September 64.7 °F
October 64.4 °F
August 64.0 °F
Coldest months:
January 59.0 °F
February 59.3 °F
March 61.0 °F
Rainiest months:
November 5 days
March 4 days
December 4 days
Windiest months:
July 14.0 mph
August 13.5 mph
June 13.1 mph

Cascais on a weather map

Current weather
04:44
Cascais
+59°F
S 16 mph
Feels like: +55°F
Precip.: 65%
Places in Portugal:
Name
°F
Albufeira
+54°F
Algarve
+57°F
Cascais
+59°F
Lagos
+55°F
Lisbon
+55°F
Madeira
+50°F
Peniche
+55°F
Ponta Delgada
+57°F
Portimao
+55°F
Porto
+52°F
Porto Santo Island
+63°F
Sao Miguel
+57°F
Setubal
+55°F
Faro
+57°F
Funchal
+50°F
all places
24 Hours Forecast
Cascais
Local time: 04:44
May 17, sunday
0600
59°F
S
16 mph
0900
61°F
SE
15 mph
1200
61°F
SE
16 mph
1500
61°F
SE
17 mph
1800
61°F
S
19 mph
2100
59°F
S
19 mph
May 18, monday
0000
59°F
S
17 mph
0300
57°F
S
14 mph
Units of measurement: °C / °F