Average sea water temperature in May:
+61.2°F
| Minimum sea water temperature in May: | 66.4°F |
| Maximum sea water temperature in May: | 57.0°F |
Daily sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 61.4°F. The highest and lowest sea temperatures during the month were 63.7°F and 59.2°F.
Monthly sea water temperature in Cascais, °F
Which Portugal resorts have warmest sea in May?
| Place name | May 2026 | May 2025 |
|---|---|---|
| Madeira | 66.4°F | 68.3°F |
| Funchal | 66.4°F | 68.3°F |
| Canico | 66.0°F | 68.0°F |
| Porto Santo Island | 65.7°F | 66.9°F |
| Lisbon | 63.8°F | 63.9°F |
| Faro | 63.8°F | 64.5°F |
| Algarve | 63.8°F | 64.5°F |
| Tavira | 63.7°F | 63.7°F |
| Quarteira | 63.2°F | 63.7°F |
| Setubal | 63.2°F | 63.4°F |
| Santa Maria Island | 63.1°F | 65.1°F |
| Albufeira | 62.9°F | 63.2°F |
| Portimao | 62.6°F | 62.6°F |
| Alvor | 62.6°F | 62.6°F |
| Lagos | 62.3°F | 62.3°F |
| Sao Miguel | 62.3°F | 63.5°F |
| Ponta Delgada | 62.2°F | 63.5°F |
| Corvo Island | 62.1°F | 63.3°F |
| Flores Island | 61.9°F | 63.4°F |
| Faial Island | 61.9°F | 63.1°F |
Best time for vacation in Cascais
Cascais on a weather map
Places in Portugal:
Name
°F
24 Hours Forecast
Cascais
Local time: 13:08
June 26, friday
1500
70°F
NE
9 mph
9 mph
1800
70°F
NE
9 mph
9 mph
2100
68°F
E
9 mph
9 mph
June 27, saturday
0000
66°F
E
7 mph
7 mph
0300
66°F
E
6 mph
6 mph
0600
66°F
E
4 mph
4 mph
0900
66°F
NE
6 mph
6 mph
1200
70°F
NE
9 mph
9 mph
