Current sea water temperature:
+70.9°F
| Minimum sea water temperature in August: | 73.6°F |
| Maximum sea water temperature in August: | 61.7°F |
| Average sea water temperature in August: | 67.2°F |
| more information | |
14 days
forecast
forecast
| Lisbon |
monthly
weather
weather
| Lisbon |
Sea water temperature for the last 10 days:
| August 10 | 70.9°F | August 5 | 70.0°F |
| August 9 | 70.5°F | August 4 | 69.3°F |
| August 8 | 71.8°F | August 3 | 70.5°F |
| August 7 | 70.9°F | August 2 | 69.6°F |
| August 6 | 70.5°F | August 1 | 68.9°F |
Monthly sea water temperature, °F
When is the warmest sea in Lisbon?
Based on the data about daily sea water temperature for the last three years the warmest sea in Lisbon was noticed in August, July and September.
Monthly Sea Temperatures in Lisbon, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 70.2°F. The highest and lowest sea temperatures during the month were 72.5°F and 68.2°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 71.1°F. The highest and lowest sea temperatures during the month were 73.6°F and 69.1°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 65.9°F. The highest and lowest sea temperatures during the month were 69.3°F and 63.0°F.
current
weather
weather
| Lisbon |
weather in
August
August
| Lisbon |
Best time for vacation in Lisbon
Lisbon on a weather map
Places in Portugal:
Name
°F
24 Hours Forecast
Lisbon
Local time: 03:19
August 11, tuesday
0600
66°F
S
7 mph
7 mph
0900
72°F
S
9 mph
9 mph
1200
79°F
SE
7 mph
7 mph
1500
82°F
SE
15 mph
15 mph
1800
79°F
SE
16 mph
16 mph
2100
72°F
SE
15 mph
15 mph
August 12, wednesday
0000
68°F
S
11 mph
11 mph
0300
68°F
S
7 mph
7 mph
