World Resorts Portugal Porto Weather

Porto Sea Temperature in May

Average sea water temperature in May:
+59.9°F
Minimum sea water temperature in May: 65.3°F
Maximum sea water temperature in May: 55.4°F

Daily sea water temperature in May, °F

Show year:
2026
2025
2024

The average sea water temperature in May of 2026 was 61.4°F. The highest and lowest sea temperatures during the month were 64.4°F and 58.8°F.

Monthly sea water temperature in Porto, °F

Which Portugal resorts have warmest sea in May?

Place name May 2026 May 2025
Madeira 66.4°F 68.3°F
Funchal 66.4°F 68.3°F
Canico 66.0°F 68.0°F
Porto Santo Island 65.7°F 66.9°F
Lisbon 63.8°F 63.9°F
Faro 63.8°F 64.5°F
Algarve 63.8°F 64.5°F
Tavira 63.7°F 63.7°F
Quarteira 63.2°F 63.7°F
Setubal 63.2°F 63.4°F
Santa Maria Island 63.1°F 65.1°F
Albufeira 62.9°F 63.2°F
Portimao 62.6°F 62.6°F
Alvor 62.6°F 62.6°F
Lagos 62.3°F 62.3°F
Sao Miguel 62.3°F 63.5°F
Ponta Delgada 62.2°F 63.5°F
Corvo Island 62.1°F 63.3°F
Flores Island 61.9°F 63.4°F
Faial Island 61.9°F 63.1°F

Best time for vacation in Porto

Sunniest months:
August 25 days
July 24 days
September 21 days
Warmest months:
August 77.9 °F
July 77.5 °F
September 75.5 °F
Warmest sea temp:
September 63.4 °F
August 62.9 °F
July 62.5 °F
Coldest months:
January 56.2 °F
February 57.5 °F
December 58.3 °F
Rainiest months:
November 9 days
December 8 days
October 8 days
Windiest months:
February 8.5 mph
March 8.4 mph
January 8.3 mph

Porto on a weather map

Porto
+59°F
NW 4 mph
Feels like: +59°F
Precip.: 14%
Places in Portugal:
Name
°F
+59°F
+64°F
+63°F
+61°F
+59°F
+61°F
+66°F
+61°F
+55°F
+59°F
+61°F
+59°F
+63°F
+66°F
24 Hours Forecast
Porto
Local time: 05:35
June 06, saturday
0600
59°F
NW
4 mph
0900
61°F
S
3 mph
1200
66°F
SE
9 mph
1500
68°F
SE
15 mph
1800
64°F
SE
15 mph
2100
61°F
S
11 mph
June 07, sunday
0000
59°F
SW
4 mph
0300
59°F
S
4 mph

Best place for vacation:

Units of measurement: °C / °F