Measurements:
°C
°F
Porto Alegre
80°F
NW 1 mph
Feels like: 82°F
Precip: 0%
World Resorts Brazil Porto Alegre Weather

Porto Alegre Sea Water Temperature

Current Sea Water Temperature:
+85.0°F
Maximum Sea Water Temperature in February: 88.8°F
Minimum Sea Water Temperature in February: 79.6°F
Average water temperature in February: 84.6°F

Sea Water Temperature for the Last 10 Days:

February 24 85.0°F February 19 85.6°F
February 23 85.0°F February 18 86.2°F
February 22 85.6°F February 17 86.4°F
February 21 84.4°F February 16 86.6°F
February 20 85.2°F February 15 85.0°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 85.2°F. The maximum and minimum values were 82.8°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: 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:
February 90.8 °F
January 90.7 °F
March 88.0 °F
Warmest sea temperature:
February 84.6 °F
January 84.0 °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
Angra dos Reis +76
Buzios +78
Florianopolis +74
Fortaleza +82
Joao Pessoa +82
Maceio +82
Natal +82
Porto Alegre +80
Recife +82
Rio de Janeiro +78
Rio Grande +74
Salvador +84
Santos +78
Sao Paulo +72
Sao Sebastiao +78
24 Hours Weather Forecast
Porto Alegre
Local time: 01:19
25 feb, wednesday
0300 76°F
SE
5 mph
0600 74°F
SE
5 mph
0900 82°F
NE
6 mph
1200 90°F
N
9 mph
1500 88°F
N
14 mph
1800 82°F
N
15 mph
2100 78°F
N
11 mph
26 feb, thursday
0000 74°F
N
9 mph