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

72.2

°F

October 28, 09:01

Trend:

stable

Yesterday:

73.3°F

Tomorrow:

72.6°F

Sunrise:

05:34

Sunset:

18:44

Day Length:

13 h. 10 min.

Porto Alegre in November

Minimum:

77.9°F

Average:

79.4°F

Maximum:

81.6°F

Sea water temperature in Porto Alegre today

As of now, in Porto Alegre, the water temperature is 72.2°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 1.4°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 rise a bit.

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 also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 74.1°F on 2021, while the historical minimum was 67.6°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 maximum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 73.3°F, with minimum temperature starting at 72.6°F, while the maximum might reach 73.7°F.

Daily water temperature in Porto Alegre

Date Current Year

actual* / forecast**

last year 10 years average
Oct 14 70.5°F 70.0°F 68.5°F
Oct 15 70.0°F 69.8°F 68.5°F
Oct 16 69.4°F 69.8°F 68.6°F
Oct 17 69.9°F 69.6°F 68.9°F
Oct 18 70.4°F 69.3°F 68.8°F
Oct 19 69.8°F 69.0°F 68.7°F
Oct 20 69.3°F 70.3°F 69.1°F
Oct 21 68.1°F 70.9°F 69.0°F
Oct 22 68.8°F 72.5°F 69.2°F
Oct 23 69.9°F 74.1°F 69.5°F
Oct 24 71.2°F 74.0°F 69.7°F
Oct 25 73.9°F 73.7°F 70.1°F
Oct 26 73.6°F 73.8°F 70.4°F
Oct 27 73.3°F 73.6°F 70.5°F
Oct 28 72.2°F 73.3°F 70.8°F
Oct 29 72.6°F 73.5°F 71.2°F
Oct 30 73.0°F 73.8°F 71.7°F
Oct 31 73.3°F 74.6°F 71.9°F
Nov 1 73.7°F 75.3°F 72.3°F
Nov 2 73.7°F 75.1°F 72.3°F
Nov 3 73.4°F 74.9°F 72.1°F
Nov 4 73.6°F 76.4°F 72.2°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 151 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 79.1°F in Winter, 73.3°F in Spring, 60.9°F in Summer, and 68.8°F in Autumn.