18.12
thu
thu
Day

55°F
N 17 mph
Precip.
0%
0%
Night

54°F
NW 9 mph
Precip.
100%
100%
19.12
fri
fri
Day

52°F
S 12 mph
Precip.
73%
73%
Night

50°F
S 4 mph
Precip.
0%
0%
20.12
sat
sat
Day

52°F
N 17 mph
Precip.
100%
100%
Night

48°F
NE 9 mph
Precip.
100%
100%
21.12
sun
sun
Day

46°F
N 8 mph
Precip.
100%
100%
Night

48°F
E 14 mph
Precip.
100%
100%
22.12
mon
mon
Day

52°F
E 20 mph
Precip.
100%
100%
Night

55°F
NE 17 mph
Precip.
100%
100%
23.12
tue
tue
Day

57°F
E 17 mph
Precip.
100%
100%
Night

52°F
SE 8 mph
Precip.
100%
100%
24.12
wed
wed
Day

54°F
SE 12 mph
Precip.
100%
100%
Night

50°F
SE 6 mph
Precip.
100%
100%
25.12
thu
thu
Day

52°F
NE 5 mph
Precip.
79%
79%
Night

52°F
E 11 mph
Precip.
100%
100%
26.12
fri
fri
Day

52°F
SE 4 mph
Precip.
20%
20%
Night

54°F
N 12 mph
Precip.
100%
100%
27.12
sat
sat
Day

57°F
SE 9 mph
Precip.
100%
100%
Night

55°F
E 6 mph
Precip.
73%
73%
28.12
sun
sun
Day

55°F
SE 11 mph
Precip.
100%
100%
Night

50°F
SE 15 mph
Precip.
100%
100%
29.12
mon
mon
Day

52°F
SE 17 mph
Precip.
100%
100%
Night

48°F
SW 6 mph
Precip.
0%
0%
30.12
tue
tue
Day

48°F
SW 3 mph
Precip.
0%
0%
Night

46°F
SW 4 mph
Precip.
0%
0%
31.12
wed
wed
Day

48°F
E 5 mph
Precip.
0%
0%
Night

48°F
NW 7 mph
Precip.
0%
0%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 59.3°F. The highest and lowest sea temperatures during the month were 60.3°F and 58.3°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 56.7°F. The highest and lowest sea temperatures during the month were 58.1°F and 55.0°F.
Air temperature in Porto, °F
Precipitation total in Porto, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Porto
Porto on a weather map
Places in Portugal:
Name
°F
24 Hours Forecast
Porto
Local time: 20:00
December 18, thursday
2100

54°F
N
17 mph
17 mph
December 19, friday
0000

54°F
NW
9 mph
9 mph
0300

54°F
S
15 mph
15 mph
0600

54°F
S
15 mph
15 mph
0900

52°F
S
14 mph
14 mph
1200

52°F
S
12 mph
12 mph
1500

54°F
S
12 mph
12 mph
1800

52°F
S
9 mph
9 mph


























