Measurements:
°C
°F
CURRENT WEATHER
07:38
Porto Alegre
68°F
NW 7 mph
Feels like: 68°F
Precip: 27%
World Resorts Brazil Porto Alegre Weather

7 Day Weather Forecast

08.18
tue
DAY
72°F
NW 7 mph
precip
23%
NIGHT
64°F
NW 5 mph
precip
67%
08.19
wed
DAY
68°F
W 4 mph
precip
33%
NIGHT
66°F
W 5 mph
precip
43%
08.20
thu
DAY
70°F
SE 9 mph
precip
42%
NIGHT
58°F
SE 14 mph
precip
11%
08.21
fri
DAY
56°F
E 9 mph
precip
35%
NIGHT
54°F
N 4 mph
precip
24%
08.22
sat
DAY
58°F
NE 6 mph
precip
11%
NIGHT
50°F
NE 3 mph
precip
12%
08.23
sun
DAY
56°F
E 8 mph
precip
11%
NIGHT
48°F
NE 6 mph
precip
7%
08.24
mon
DAY
56°F
NW 4 mph
precip
2%
NIGHT
50°F
W 6 mph
precip
8%

Porto Alegre Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Porto Alegre was 17.2°F. The maximum and minimum values were 15.4°F and 18.9°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:
June 65.7 °F
July 66.3 °F
August 69.5 °F
The most rainy months:
September 5 days
November 4 days
October 4 days
The most windy months:
December 7 mph
November 7 mph
January 7 mph
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