Current sea water temperature:
+58.6°F
| Minimum sea water temperature in January: | 61.5°F |
| Maximum sea water temperature in January: | 55.2°F |
| Average sea water temperature in January: | 58.8°F |
| more information | |
14 days
forecast
forecast
| Cascais |
monthly
weather
weather
| Cascais |
Sea water temperature for the last 10 days:
| January 7 | 58.6°F | January 2 | 57.9°F |
| January 6 | 58.6°F | January 1 | 57.7°F |
| January 5 | 58.6°F | December 31 | 57.4°F |
| January 4 | 58.8°F | December 30 | 57.2°F |
| January 3 | 58.3°F | December 29 | 57.4°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
January
January
| Cascais |
Best time for vacation in Cascais
Cascais on a weather map
Places in Portugal:
Name
°F
24 Hours Forecast
Cascais
Local time: 21:47
January 08, thursday
0000
52°F
S
7 mph
7 mph
0300
52°F
S
7 mph
7 mph
0600
52°F
S
4 mph
4 mph
0900
54°F
SE
2 mph
2 mph
1200
57°F
E
6 mph
6 mph
1500
57°F
E
9 mph
9 mph
1800
57°F
E
11 mph
11 mph
2100
57°F
E
14 mph
14 mph
