All data are in degrees Fahrenheit

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Water temperature in Porto Alegre

Detailed information about the current water temperature in Porto Alegre. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Porto Alegre now

62.3

°F

May 28, 12:48

Trend:

increasing

Yesterday:

62.1°F

Tomorrow:

62.3°F

Sunrise:

07:10

Sunset:

17:34

Day Length:

10 h. 24 min.

Porto Alegre in June

Minimum:

76.9°F

Average:

79.3°F

Maximum:

81.8°F

Sea water temperature in Porto Alegre today

As of now, in Porto Alegre, the water temperature is 62.3°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 2.3°F lower than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 67.9°F on 2023, while the historical minimum was 61.4°F on 2016.

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 61.8°F, the minimum temperature may reach 60.8°F, and the maximum might stay at 62.3°F.

Daily water temperature in Porto Alegre

Date Current Year

actual* / forecast**

last year 10 years average
May 14 63.6°F 69.2°F 67.2°F
May 15 63.3°F 69.7°F 67.0°F
May 16 63.3°F 69.7°F 66.7°F
May 17 62.6°F 69.2°F 66.2°F
May 18 62.3°F 69.5°F 66.1°F
May 19 62.0°F 68.6°F 65.8°F
May 20 61.9°F 67.5°F 65.3°F
May 21 61.5°F 67.2°F 65.1°F
May 22 61.3°F 66.5°F 64.9°F
May 23 61.0°F 65.2°F 64.7°F
May 24 60.6°F 64.1°F 64.1°F
May 25 61.2°F 63.8°F 63.9°F
May 26 61.2°F 64.9°F 64.1°F
May 27 62.1°F 64.9°F 64.4°F
May 28 62.3°F 65.9°F 64.6°F
May 29 62.3°F 66.0°F 64.7°F
May 30 62.3°F 65.7°F 64.6°F
May 31 62.3°F 66.0°F 64.7°F
Jun 1 62.1°F 66.0°F 64.4°F
Jun 2 61.8°F 64.6°F 64.1°F
Jun 3 61.1°F 64.2°F 63.5°F
Jun 4 60.8°F 63.8°F 63.1°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Porto Alegre by month

In Porto Alegre, the months December through April offer comfortable swimming conditions, which amounts to 152 swimming days.
The warmest water in Porto Alegre was recorded on March 5, 2025, reaching a 86.6°F. While the coldest temperature occurred on July 5, 2025, dipping to 54.7°F. The average readings by season are 79.3°F in Winter, 73.4°F in Spring, 60.7°F in Summer, and 68.9°F in Autumn.