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

63.3

°F

July 23, 16:27

Trend:

increasing

Yesterday:

63.2°F

Tomorrow:

63.4°F

Sunrise:

07:16

Sunset:

17:47

Day Length:

10 h. 31 min.

Porto Alegre in July

Minimum:

76.6°F

Average:

79.2°F

Maximum:

81.5°F

Sea water temperature in Porto Alegre today

As of now, in Porto Alegre, the water temperature is 63.3°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 3.7°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 stay about the same.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 61.1°F on 2017, while the historical minimum was 57.6°F on 2016.

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 63.6°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
Jul 9 56.7°F 56.3°F 58.7°F
Jul 10 57.1°F 56.4°F 58.7°F
Jul 11 57.2°F 56.4°F 58.8°F
Jul 12 57.4°F 56.5°F 58.9°F
Jul 13 57.5°F 56.7°F 59.0°F
Jul 14 56.6°F 56.7°F 59.0°F
Jul 15 57.0°F 57.2°F 59.4°F
Jul 16 57.8°F 57.3°F 59.5°F
Jul 17 59.5°F 57.7°F 59.5°F
Jul 18 59.9°F 57.8°F 59.3°F
Jul 19 62.6°F 57.9°F 59.5°F
Jul 20 63.6°F 57.7°F 59.8°F
Jul 21 63.7°F 58.0°F 60.1°F
Jul 22 63.2°F 57.6°F 60.0°F
Jul 23 63.3°F 58.6°F 59.6°F
Jul 24 63.4°F 58.7°F 59.7°F
Jul 25 63.8°F 59.1°F 60.1°F
Jul 26 63.8°F 59.4°F 60.1°F
Jul 27 63.9°F 59.3°F 60.2°F
Jul 28 63.5°F 59.1°F 59.8°F
Jul 29 63.4°F 58.8°F 59.7°F
Jul 30 63.2°F 59.0°F 59.5°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, 60.7°F in Summer, and 68.9°F in Autumn.