Current Sea Water Temperature:
+66.8°F
| Maximum Sea Water Temperature in October: | 70.2°F |
| Minimum Sea Water Temperature in October: | 60.8°F |
| Average water temperature in October: | 66.0°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| October 18 | 66.8°F | October 13 | 66.8°F |
| October 17 | 67.4°F | October 12 | 67.0°F |
| October 16 | 67.0°F | October 11 | 67.6°F |
| October 15 | 66.2°F | October 10 | 67.8°F |
| October 14 | 66.6°F | October 09 | 68.0°F |
When is the Warmest Sea for Cascais?
According to our data for the last three years for Cascais the highest average sea water temperature was in September, October and August.
Average Water Temperature by Month, °F
Sea Water Temperature in September
The average sea surface temperature in September 2026 for Cascais was 66.2°F. The maximum and minimum values were 63.4°F and 68.8°F respectively.
Sea Water Temperature in October
The average sea surface temperature in October 2026 for Cascais was 67.2°F. The maximum and minimum values were 66.2°F and 68.4°F respectively.
Sea Water Temperature in August
The average sea surface temperature in August 2026 for Cascais was 67.5°F. The maximum and minimum values were 65.2°F and 69.4°F respectively.
Portugal Resorts:
NAME
F°
| Albufeira |  |
+68 |
| Algarve |  |
+68 |
| Cascais |  |
+64 |
| Ericeira | |
+56 |
| Faro | |
+68 |
| Funchal | |
+54 |
| Lagos | |
+66 |
| Lisbon | |
+64 |
| Madeira | |
+54 |
| Ponta Delgada | |
+68 |
| Portimao | |
+60 |
| Porto |  |
+54 |
| Quarteira | |
+68 |
| Sao Miguel | |
+68 |
| Setubal | |
+56 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Cascais
Local time: 05:17
19 oct, monday
| 0600 |  |
64°F | SW 8 mph |
| 0900 |  |
64°F | SW 6 mph |
| 1200 | |
68°F | S 6 mph |
| 1500 | |
64°F | S 15 mph |
| 1800 | |
64°F | S 14 mph |
| 2100 | |
64°F | S 18 mph |
20 oct, tuesday
| 0000 | |
62°F | S 12 mph |
| 0300 |  |
62°F | S 12 mph |