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

61.3

°F

August 20, 18:00

Trend:

decreasing

Yesterday:

61.6°F

Tomorrow:

60.9°F

Sunrise:

06:54

Sunset:

18:03

Day Length:

11 h. 9 min.

Porto Alegre in August

Minimum:

76.7°F

Average:

79.1°F

Maximum:

81.2°F

Sea water temperature in Porto Alegre today

As of now, in Porto Alegre, the water temperature is 61.3°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 0.3°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to fall a bit.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 65.5°F on 2023, while the historical minimum was 59.0°F on 2022.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the histoorical minimum and others when it was close to the historical maximum. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 61.4°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Porto Alegre

Date Current Year

actual* / forecast**

last year 10 years average
Aug 6 66.1°F 58.8°F 60.9°F
Aug 7 65.6°F 58.8°F 61.2°F
Aug 8 64.4°F 59.2°F 61.3°F
Aug 9 64.0°F 59.3°F 61.4°F
Aug 10 63.6°F 59.4°F 61.5°F
Aug 11 61.3°F 59.1°F 61.2°F
Aug 12 60.3°F 58.5°F 60.8°F
Aug 13 60.2°F 59.3°F 60.7°F
Aug 14 59.8°F 59.6°F 60.6°F
Aug 15 59.8°F 59.2°F 60.4°F
Aug 16 61.4°F 60.1°F 60.5°F
Aug 17 62.3°F 60.0°F 60.9°F
Aug 18 61.7°F 59.8°F 60.9°F
Aug 19 61.6°F 59.8°F 61.0°F
Aug 20 61.3°F 59.7°F 60.9°F
Aug 21 60.9°F 59.6°F 60.6°F
Aug 22 61.0°F 60.0°F 60.7°F
Aug 23 61.1°F 59.8°F 60.7°F
Aug 24 61.0°F 59.6°F 60.7°F
Aug 25 61.7°F 60.2°F 61.4°F
Aug 26 62.2°F 60.6°F 61.9°F
Aug 27 62.2°F 60.8°F 61.8°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 6, 2026, dipping to 54.4°F. The average readings by season are 79.3°F in Winter, 73.3°F in Spring, 60.8°F in Summer, and 68.9°F in Autumn.