World Resorts Portugal Porto Weather

Porto Sea Temperature in December

Average sea water temperature in December:
+57.8°F
Minimum sea water temperature in December: 61.7°F
Maximum sea water temperature in December: 54.0°F

Daily sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 58.4°F. The highest and lowest sea temperatures during the month were 60.3°F and 54.5°F.

Monthly sea water temperature in Porto, °F

Which Portugal resorts have warmest sea in December?

Place name December 2025 December 2024
Madeira 68.6°F 69.9°F
Funchal 68.6°F 69.9°F
Canico 68.5°F 69.7°F
Porto Santo Island 67.8°F 69.3°F
Santa Maria Island 66.2°F 66.9°F
Faial Island 64.0°F 65.6°F
Pico Island 63.8°F 65.5°F
Flores Island 63.7°F 65.6°F
Sao Miguel 63.7°F 65.5°F
Ponta Delgada 63.7°F 65.7°F
Sao Jorge 63.6°F 65.6°F
Corvo Island 63.3°F 65.0°F
Graciosa 63.2°F 65.6°F
Terceira Island 63.0°F 65.1°F
Algarve 61.3°F 64.2°F
Faro 61.3°F 64.2°F
Sagres 61.1°F 64.3°F
Lagos 61.0°F 64.0°F
Alvor 61.0°F 63.8°F
Portimao 61.0°F 63.5°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 56.5 °F
February 57.6 °F
December 58.3 °F
Rainiest months:
November 9 days
December 8 days
October 8 days
Windiest months:
March 8.4 mph
February 8.3 mph
November 8.1 mph

Porto on a weather map

Porto
+48°F
W 7 mph
Feels like: +46°F
Precip.: 89%
Places in Portugal:
Name
°F
+55°F
+57°F
+54°F
+54°F
+57°F
+52°F
+61°F
+59°F
+55°F
+48°F
+59°F
+52°F
+57°F
+61°F
24 Hours Forecast
Porto
Local time: 09:51
January 01, thursday
1200
48°F
W
9 mph
1500
50°F
W
9 mph
1800
50°F
W
11 mph
2100
50°F
W
12 mph
January 02, friday
0000
52°F
W
14 mph
0300
52°F
NW
16 mph
0600
55°F
NW
17 mph
0900
55°F
NW
17 mph

Best place for vacation:

Units of measurement: °C / °F