Measurements:
°C
°F
CURRENT WEATHER
14:07
Porto
70°F
SE 12 mph
Feels like: 70°F
Precip: 0%
World Resorts Portugal Porto Weather

7 Day Weather Forecast

05.30
sat
DAY
72°F
SE 9 mph
precip
0%
NIGHT
62°F
S 5 mph
precip
0%
05.31
sun
DAY
74°F
SE 11 mph
precip
0%
NIGHT
66°F
S 8 mph
precip
0%
06.01
mon
DAY
74°F
SE 14 mph
precip
0%
NIGHT
64°F
S 10 mph
precip
0%
06.02
tue
DAY
72°F
SE 17 mph
precip
0%
NIGHT
62°F
S 9 mph
precip
0%
06.03
wed
DAY
72°F
SE 11 mph
precip
0%
NIGHT
60°F
S 12 mph
precip
0%
06.04
thu
DAY
66°F
SE 13 mph
precip
0%
NIGHT
60°F
S 7 mph
precip
0%
06.05
fri
DAY
68°F
NE 8 mph
precip
0%
NIGHT
62°F
NE 8 mph
precip
100%

Porto Sea Water Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Porto was 16.3°F. The maximum and minimum values were 14.9°F and 18.0°F respectively.

Porto on the Weather Map

Best Time to Visit Porto
The most sunny months:
August 25 days
July 24 days
September 21 days
The most warm months:
August 81.0 °F
July 80.5 °F
September 78.3 °F
Warmest sea temperature:
September 64.8 °F
August 64.3 °F
July 63.9 °F
The most cold months:
January 56.9 °F
February 58.3 °F
December 59.3 °F
The most rainy months:
November 9 days
December 8 days
October 8 days
The most windy months:
February 8 mph
March 8 mph
January 8 mph
more details