Measurements:
°C
°F
CURRENT WEATHER
17:24
Porto Alegre
60°F
NW 7 mph
Feels like: 58°F
Precip: 0%
World Resorts Brazil Porto Alegre Weather

7 Day Weather Forecast

05.22
fri
DAY
64°F
NW 6 mph
precip
60%
NIGHT
56°F
W 3 mph
precip
0%
05.23
sat
DAY
66°F
W 6 mph
precip
61%
NIGHT
60°F
W 7 mph
precip
89%
05.24
sun
DAY
70°F
W 8 mph
precip
66%
NIGHT
60°F
W 6 mph
precip
0%
05.25
mon
DAY
70°F
W 2 mph
precip
0%
NIGHT
64°F
N 3 mph
precip
100%
05.26
tue
DAY
64°F
NE 5 mph
precip
76%
NIGHT
58°F
NE 2 mph
precip
0%
05.27
wed
DAY
64°F
E 3 mph
precip
0%
NIGHT
58°F
W 4 mph
precip
0%
05.28
thu
DAY
70°F
SW 1 mph
precip
0%
NIGHT
60°F
SW 1 mph
precip
0%

Porto Alegre Sea Water Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Porto Alegre was 18.6°F. The maximum and minimum values were 16.3°F and 21.0°F respectively.

Porto Alegre on the Weather Map

Best Time to Visit Porto Alegre
The most sunny months:
February 15 days
March 15 days
May 15 days
The most warm months:
January 90.7 °F
February 90.6 °F
March 88.0 °F
Warmest sea temperature:
February 84.6 °F
January 84.0 °F
March 83.2 °F
The most cold months:
July 66.1 °F
June 66.2 °F
August 69.5 °F
The most rainy months:
September 5 days
May 5 days
November 4 days
The most windy months:
December 7 mph
November 7 mph
January 7 mph
more details