Average sea water temperature in August:
+64.0°F
| Minimum sea water temperature in August: | 68.2°F |
| Maximum sea water temperature in August: | 58.6°F |
Daily 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.
Monthly sea water temperature in Cascais, °F
Which Portugal resorts have warmest sea in August?
| Place name | August 2025 | August 2024 |
|---|---|---|
| Graciosa | 75.3°F | 77.5°F |
| Madeira | 75.2°F | 75.5°F |
| Funchal | 75.2°F | 75.5°F |
| Sao Jorge | 75.1°F | 77.9°F |
| Corvo Island | 75.0°F | 77.9°F |
| Canico | 75.0°F | 75.1°F |
| Flores Island | 75.0°F | 78.2°F |
| Santa Maria Island | 74.8°F | 78.1°F |
| Pico Island | 74.6°F | 77.2°F |
| Faial Island | 74.5°F | 77.2°F |
| Terceira Island | 74.3°F | 76.8°F |
| Ponta Delgada | 74.2°F | 77.1°F |
| Sao Miguel | 74.1°F | 76.9°F |
| Tavira | 73.9°F | 72.4°F |
| Porto Santo Island | 73.7°F | 74.8°F |
| Algarve | 73.4°F | 72.3°F |
| Faro | 73.4°F | 72.3°F |
| Quarteira | 72.5°F | 71.3°F |
| Albufeira | 72.3°F | 70.6°F |
| Portimao | 71.6°F | 69.9°F |
Best time for vacation in Cascais
Cascais on a weather map
Places in Portugal:
Name
°F
24 Hours Forecast
Cascais
Local time: 07:35
December 05, friday
0900
63°F
E
17 mph
17 mph
1200
63°F
E
16 mph
16 mph
1500
63°F
E
14 mph
14 mph
1800
61°F
E
11 mph
11 mph
2100
61°F
E
9 mph
9 mph
December 06, saturday
0000
61°F
E
9 mph
9 mph
0300
61°F
E
11 mph
11 mph
0600
61°F
E
9 mph
9 mph
