Current sea water temperature:
+60.4°F
| Minimum sea water temperature in May: | 66.4°F |
| Maximum sea water temperature in May: | 57.0°F |
| Average sea water temperature in May: | 61.2°F |
| more information | |
14 days
forecast
forecast
| Cascais |
monthly
weather
weather
| Cascais |
Sea water temperature for the last 10 days:
| May 16 | 60.4°F | May 11 | 61.0°F |
| May 15 | 61.9°F | May 10 | 60.8°F |
| May 14 | 62.8°F | May 9 | 60.8°F |
| May 13 | 61.9°F | May 8 | 60.1°F |
| May 12 | 61.3°F | May 7 | 59.7°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: 02:38
May 17, sunday
0300
59°F
S
19 mph
19 mph
0600
59°F
S
16 mph
16 mph
0900
61°F
SE
15 mph
15 mph
1200
61°F
SE
16 mph
16 mph
1500
61°F
SE
17 mph
17 mph
1800
61°F
S
19 mph
19 mph
2100
59°F
S
19 mph
19 mph
May 18, monday
0000
59°F
S
17 mph
17 mph
