Measurements:
°C
°F
Porto Alegre
56°F
W 2 mph
Feels like: 56°F
Precip: 2%
World Resorts Brazil Porto Alegre Weather

Porto Alegre Sea Water Temperature

Current Sea Water Temperature:
+56.8°F
Maximum Sea Water Temperature in July: 64.2°F
Minimum Sea Water Temperature in July: 55.0°F
Average water temperature in July: 59.9°F

Sea Water Temperature for the Last 10 Days:

July 08 56.8°F July 03 57.2°F
July 07 56.8°F July 02 57.0°F
July 06 55.0°F July 01 57.6°F
July 05 56.0°F June 30 57.4°F
July 04 56.8°F June 29 56.6°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:
June 65.7 °F
July 66.1 °F
August 69.5 °F
The most rainy months:
September 5 days
November 4 days
July 4 days
The most windy months:
December 7 mph
November 7 mph
January 7 mph

Porto Alegre on the Weather Map

24 Hours Weather Forecast
Porto Alegre
Local time: 20:56
08 jul, wednesday
2100 56°F
W
2 mph
09 jul, thursday
0000 54°F
W
2 mph
0300 52°F
SW
1 mph
0600 50°F
SE
3 mph
0900 54°F
SE
3 mph
1200 66°F
SE
5 mph
1500 72°F
SE
6 mph
1800 64°F
NE
4 mph