Current Sea Water Temperature:
+65.0°F
| Maximum Sea Water Temperature in September: | 71.6°F |
| Minimum Sea Water Temperature in September: | 59.6°F |
| Average water temperature in September: | 66.2°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| September 28 | 65.0°F | September 23 | 65.8°F |
| September 27 | 65.2°F | September 22 | 65.2°F |
| September 26 | 64.6°F | September 21 | 65.4°F |
| September 25 | 64.8°F | September 20 | 65.2°F |
| September 24 | 66.4°F | September 19 | 63.2°F |
When is the Warmest Sea for Sintra?
According to our data for the last three years for Sintra 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 Sintra was 65.6°F. The maximum and minimum values were 63.2°F and 67.8°F respectively.
Sea Water Temperature in October
The average sea surface temperature in October 2025 for Sintra was 64.3°F. The maximum and minimum values were 61.4°F and 67.0°F respectively.
Sea Water Temperature in August
The average sea surface temperature in August 2026 for Sintra was 67.9°F. The maximum and minimum values were 65.8°F and 69.8°F respectively.
Portugal Resorts:
NAME
F°
| Albufeira |  |
+72 |
| Algarve |  |
+72 |
| Cascais |  |
+68 |
| Ericeira | |
+68 |
| Faro | |
+72 |
| Funchal | |
+62 |
| Lagos | |
+72 |
| Lisbon | |
+70 |
| Madeira | |
+62 |
| Ponta Delgada | |
+68 |
| Portimao | |
+66 |
| Porto | |
+68 |
| Quarteira | |
+72 |
| Sao Miguel | |
+68 |
| Setubal | |
+66 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Sintra
Local time: 02:53
29 sep, tuesday
| 0300 |  |
70°F | N 16 mph |
| 0600 | |
70°F | NW 17 mph |
| 0900 | |
70°F | NW 22 mph |
| 1200 |  |
70°F | N 24 mph |
| 1500 | |
70°F | N 23 mph |
| 1800 | |
72°F | N 20 mph |
| 2100 | |
70°F | N 16 mph |
30 sep, wednesday
| 0000 |  |
68°F | N 16 mph |