Measurements:
°C
°F
Porto Alegre
68°F
S 4 mph
Feels like: 68°F
Precip: 0%
World Resorts Brazil Porto Alegre Weather

Porto Alegre Sea Water Temperature

Current Sea Water Temperature:
+80.4°F
Maximum Sea Water Temperature in December: 85.8°F
Minimum Sea Water Temperature in December: 75.6°F
Average water temperature in December: 80.3°F

Sea Water Temperature for the Last 10 Days:

December 05 80.4°F November 30 79.4°F
December 04 79.4°F November 29 79.8°F
December 03 79.8°F November 28 78.4°F
December 02 78.4°F November 27 77.4°F
December 01 79.4°F November 26 76.8°F

When is the Warmest Sea for Porto Alegre?

According to our data for the last three years for Porto Alegre the highest average sea water temperature was in February, January and March.

Average Water Temperature by Month, °F

Sea Water Temperature in February

Select Year: 2025 2024 2023

The average sea surface temperature in February 2025 for Porto Alegre was 86.6°F. The maximum and minimum values were 84.6°F and 88.8°F respectively.

Sea Water Temperature in January

Select Year: 2025 2024 2023

The average sea surface temperature in January 2025 for Porto Alegre was 84.1°F. The maximum and minimum values were 80.2°F and 87.6°F respectively.

Sea Water Temperature in March

Select Year: 2025 2024 2023

The average sea surface temperature in March 2025 for Porto Alegre was 85.1°F. The maximum and minimum values were 81.2°F and 90.8°F respectively.

Best Time to Visit Porto Alegre
The most sunny months:
February 15 days
March 15 days
May 15 days
The most warm months:
January 91.1 °F
February 90.8 °F
March 88.0 °F
Warmest sea temperature:
February 84.5 °F
January 84.1 °F
March 83.3 °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

Porto Alegre on the Weather Map

Brazil Resorts:
NAME
Anchieta +72
Armacao dos Buzios +72
Buzios +72
Florianopolis +70
Fortaleza +84
Itajai +70
Jericoacoara +80
Recife +84
Rio de Janeiro +74
Rio Grande +70
Salvador +82
Santos +72
Sao Paulo +68
Unamar +74
Xangri-la +68
24 Hours Weather Forecast
Porto Alegre
Local time: 06:36
05 dec, friday
0900 84°F
SE
2 mph
1200 94°F
N
2 mph
1500 92°F
N
10 mph
1800 82°F
W
10 mph
2100 74°F
W
6 mph
06 dec, saturday
0000 72°F
NW
4 mph
0300 70°F
W
1 mph
0600 74°F
SE
2 mph