Current Sea Water Temperature:
+74.8°F
| Maximum Sea Water Temperature in July: | 76.2°F |
| Minimum Sea Water Temperature in July: | 62.2°F |
| Average water temperature in July: | 68.7°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| July 09 | 74.8°F | July 04 | 74.0°F |
| July 08 | 75.8°F | July 03 | 73.0°F |
| July 07 | 76.2°F | July 02 | 72.4°F |
| July 06 | 76.2°F | July 01 | 72.2°F |
| July 05 | 75.0°F | June 30 | 72.2°F |
When is the Warmest Sea for Lisbon?
According to our data for the last three years for Lisbon the highest average sea water temperature was in August, July and September.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Lisbon was 72.4°F. The maximum and minimum values were 70.2°F and 75.0°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Lisbon was 71.3°F. The maximum and minimum values were 67.2°F and 74.8°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Lisbon was 67.7°F. The maximum and minimum values were 64.4°F and 71.4°F respectively.
Portugal Resorts:
NAME
F°
| Albufeira |  |
+64 |
| Algarve |  |
+68 |
| Cascais | |
+66 |
| Ericeira | |
+62 |
| Faro | |
+68 |
| Funchal | |
+68 |
| Lagos | |
+66 |
| Lisbon | |
+64 |
| Madeira | |
+68 |
| Portimao | |
+64 |
| Porto | |
+62 |
| Porto Santo Island |  |
+74 |
| Quarteira | |
+64 |
| Sao Miguel | |
+66 |
| Setubal | |
+60 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Lisbon
Local time: 02:52
10 jul, friday
| 0300 |  |
64°F | SE 9 mph |
| 0600 | |
64°F | S 6 mph |
| 0900 |  |
68°F | SE 7 mph |
| 1200 | |
78°F | SE 9 mph |
| 1500 |  |
82°F | SE 13 mph |
| 1800 | |
78°F | SE 16 mph |
| 2100 | |
70°F | SE 12 mph |
11 jul, saturday
| 0000 |  |
66°F | SE 7 mph |