World Resorts Portugal Lisbon Weather

Lisbon Sea Temperature in August

Average sea water temperature in August:
+67.1°F
Minimum sea water temperature in August: 73.6°F
Maximum sea water temperature in August: 61.7°F

Daily 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.

Monthly sea water temperature in Lisbon, °F

Which Portugal resorts have warmest sea in August?

Place name August 2025 August 2024
Graciosa 75.3°F 77.5°F
Madeira 75.2°F 75.5°F
Funchal 75.2°F 75.5°F
Sao Jorge 75.1°F 77.9°F
Corvo Island 75.0°F 77.9°F
Canico 75.0°F 75.1°F
Flores Island 75.0°F 78.2°F
Santa Maria Island 74.8°F 78.1°F
Pico Island 74.6°F 77.2°F
Faial Island 74.5°F 77.2°F
Terceira Island 74.3°F 76.8°F
Ponta Delgada 74.2°F 77.1°F
Sao Miguel 74.1°F 76.9°F
Tavira 73.9°F 72.4°F
Porto Santo Island 73.7°F 74.8°F
Algarve 73.4°F 72.3°F
Faro 73.4°F 72.3°F
Quarteira 72.5°F 71.3°F
Albufeira 72.3°F 70.6°F
Portimao 71.6°F 69.9°F

Best time for vacation in Lisbon

Sunniest months:
August 28 days
July 26 days
September 23 days
Warmest months:
August 81.8 °F
July 80.8 °F
September 78.6 °F
Warmest sea temp:
August 67.1 °F
July 66.8 °F
September 66.6 °F
Coldest months:
January 58.6 °F
February 59.8 °F
December 60.7 °F
Rainiest months:
March 4 days
November 4 days
April 4 days
Windiest months:
July 10.7 mph
August 10.2 mph
June 10.2 mph

Lisbon on a weather map

Lisbon
+54°F
S 9 mph
Feels like: +50°F
Precip.: 0%
Places in Portugal:
Name
°F
+54°F
+55°F
+55°F
+54°F
+55°F
+54°F
+54°F
+61°F
+54°F
+50°F
+61°F
+55°F
+54°F
24 Hours Forecast
Lisbon
Local time: 20:09
December 23, tuesday
2100
54°F
S
9 mph
December 24, wednesday
0000
52°F
S
8 mph
0300
50°F
S
6 mph
0600
48°F
S
6 mph
0900
46°F
SW
6 mph
1200
50°F
SW
7 mph
1500
54°F
SW
8 mph
1800
52°F
SW
10 mph

Best place for vacation:

Units of measurement: °C / °F