Current sea water temperature:
+56.7°F
| Minimum sea water temperature in March: | 61.3°F |
| Maximum sea water temperature in March: | 55.4°F |
| Average sea water temperature in March: | 57.9°F |
| more information | |
14 days
forecast
forecast
| Cascais |
monthly
weather
weather
| Cascais |
Sea water temperature for the last 10 days:
| March 16 | 56.7°F | March 11 | 56.5°F |
| March 15 | 56.8°F | March 10 | 56.3°F |
| March 14 | 57.0°F | March 9 | 56.8°F |
| March 13 | 56.7°F | March 8 | 56.7°F |
| March 12 | 56.7°F | March 7 | 56.8°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
March
March
| Cascais |
Best time for vacation in Cascais
Cascais on a weather map
Places in Portugal:
Name
°F
24 Hours Forecast
Cascais
Local time: 07:10
March 17, tuesday
0900
57°F
NW
17 mph
17 mph
1200
61°F
NW
16 mph
16 mph
1500
61°F
N
18 mph
18 mph
1800
59°F
N
18 mph
18 mph
2100
57°F
N
15 mph
15 mph
March 18, wednesday
0000
57°F
NW
21 mph
21 mph
0300
57°F
N
24 mph
24 mph
0600
57°F
N
20 mph
20 mph
