Measurements:
°C
°F
Porto Alegre
60°F
SW 2 mph
Feels like: 60°F
Precip: 0%
World Resorts Brazil Porto Alegre Weather

Porto Alegre Sea Water Temperature

Current Sea Water Temperature:
+73.2°F
Maximum Sea Water Temperature in May: 75.0°F
Minimum Sea Water Temperature in May: 61.4°F
Average water temperature in May: 68.8°F

Sea Water Temperature for the Last 10 Days:

April 30 73.2°F April 25 75.8°F
April 29 74.4°F April 24 75.8°F
April 28 76.2°F April 23 77.0°F
April 27 76.4°F April 22 76.6°F
April 26 76.0°F April 21 77.0°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: 2026 2025 2024

The average sea surface temperature in February 2026 for Porto Alegre was 84.8°F. The maximum and minimum values were 82.0°F and 86.6°F respectively.

Sea Water Temperature in January

Select Year: 2026 2025 2024

The average sea surface temperature in January 2026 for Porto Alegre was 83.6°F. The maximum and minimum values were 81.4°F and 86.4°F respectively.

Sea Water Temperature in March

Select Year: 2026 2025 2024

The average sea surface temperature in March 2026 for Porto Alegre was 82.4°F. The maximum and minimum values were 80.8°F and 85.2°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 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

Porto Alegre on the Weather Map

Brazil Resorts:
NAME
Buzios +76
Florianopolis +64
Fortaleza +80
Guarapari +72
Guaratuba +64
Ilha de Itamaraca +80
Joao Pessoa +78
Natal +78
Parati +66
Pôrto Belo +68
Recife +80
Rio de Janeiro +76
Salvador +82
Santos +70
Sao Paulo +68
24 Hours Weather Forecast
Porto Alegre
Local time: 02:57
01 may, friday
0300 60°F
SW
2 mph
0600 60°F
SW
2 mph
0900 66°F
SW
2 mph
1200 80°F
S
5 mph
1500 84°F
NE
2 mph
1800 72°F
N
9 mph
2100 68°F
N
4 mph
02 may, saturday
0000 68°F
NE
2 mph