Current sea water temperature:
+68.9°F
| Minimum sea water temperature in September: | 72.1°F |
| Maximum sea water temperature in September: | 60.8°F |
| Average sea water temperature in September: | 66.7°F |
| more information | |
14 days
forecast
forecast
| Lisbon |
monthly
weather
weather
| Lisbon |
Sea water temperature for the last 10 days:
| September 20 | 68.9°F | September 15 | 68.4°F |
| September 19 | 68.4°F | September 14 | 68.0°F |
| September 18 | 68.2°F | September 13 | 67.6°F |
| September 17 | 68.5°F | September 12 | 66.6°F |
| September 16 | 68.9°F | September 11 | 66.9°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 69.9°F. The highest and lowest sea temperatures during the month were 72.1°F and 68.4°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:
2026
2025
2024
The average sea water temperature in September of 2026 was 68.5°F. The highest and lowest sea temperatures during the month were 70.7°F and 66.6°F.
current
weather
weather
| Lisbon |
weather in
September
September
| Lisbon |
Best time for vacation in Lisbon
Lisbon on a weather map
Places in Portugal:
Name
°F
24 Hours Forecast
Lisbon
Local time: 20:09
September 20, sunday
2100
79°F
S
9 mph
9 mph
September 21, monday
0000
79°F
SW
4 mph
4 mph
0300
75°F
W
4 mph
4 mph
0600
72°F
W
6 mph
6 mph
0900
72°F
W
7 mph
7 mph
1200
82°F
W
5 mph
5 mph
1500
90°F
NE
6 mph
6 mph
1800
82°F
SE
11 mph
11 mph
