Current sea water temperature:
+61.5°F
| Minimum sea water temperature in April: | 63.5°F |
| Maximum sea water temperature in April: | 56.3°F |
| Average sea water temperature in April: | 59.5°F |
| more information | |
14 days
forecast
forecast
| Cascais |
monthly
weather
weather
| Cascais |
Sea water temperature for the last 10 days:
| April 26 | 61.5°F | April 21 | 60.1°F |
| April 25 | 60.8°F | April 20 | 59.7°F |
| April 24 | 60.3°F | April 19 | 59.2°F |
| April 23 | 59.4°F | April 18 | 59.2°F |
| April 22 | 59.4°F | April 17 | 58.5°F |
Monthly sea water temperature, °F
When is the warmest sea in Cascais?
Based on the data about daily sea water temperature for the last three years the warmest sea in Cascais was noticed in September, October and August.
Monthly Sea Temperatures in Cascais, °F
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 62.6°F. The highest and lowest sea temperatures during the month were 65.5°F and 60.3°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 63.2°F. The highest and lowest sea temperatures during the month were 65.8°F and 61.5°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 65.2°F. The highest and lowest sea temperatures during the month were 67.5°F and 63.3°F.
current
weather
weather
| Cascais |
weather in
May
May
| Cascais |
Best time for vacation in Cascais
Cascais on a weather map
Places in Portugal:
Name
°F
24 Hours Forecast
Cascais
Local time: 23:47
April 27, monday
0000
61°F
S
13 mph
13 mph
0300
61°F
S
11 mph
11 mph
0600
61°F
S
9 mph
9 mph
0900
64°F
S
8 mph
8 mph
1200
68°F
S
7 mph
7 mph
1500
68°F
SE
10 mph
10 mph
1800
66°F
SE
12 mph
12 mph
2100
63°F
S
14 mph
14 mph
