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

82.8

°F

February 17, 09:19

Trend:

stable

Yesterday:

82.9°F

Tomorrow:

82.9°F

Sunrise:

07:07

Sunset:

20:11

Day Length:

13 h. 4 min.

Porto Alegre in February

Minimum:

76.7°F

Average:

79.4°F

Maximum:

83.2°F

Sea water temperature in Porto Alegre today

As of now, in Porto Alegre, the water temperature is 82.8°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 2.6°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 83.4°F on 2023, while the historical minimum was 77.5°F on 2018.

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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 82.9°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
Feb 3 81.0°F 82.1°F 81.3°F
Feb 4 81.3°F 83.0°F 81.1°F
Feb 5 81.8°F 83.8°F 81.1°F
Feb 6 81.9°F 84.7°F 81.0°F
Feb 7 81.9°F 84.1°F 80.8°F
Feb 8 79.6°F 84.2°F 80.5°F
Feb 9 80.4°F 82.9°F 80.7°F
Feb 10 81.5°F 83.8°F 81.1°F
Feb 11 81.4°F 85.0°F 81.0°F
Feb 12 82.8°F 84.1°F 81.1°F
Feb 13 82.9°F 83.3°F 80.7°F
Feb 14 82.5°F 82.9°F 80.7°F
Feb 15 81.6°F 82.8°F 80.4°F
Feb 16 82.9°F 82.2°F 80.5°F
Feb 17 82.8°F 81.7°F 80.2°F
Feb 18 82.9°F 81.4°F 80.3°F
Feb 19 83.0°F 81.1°F 80.5°F
Feb 20 83.0°F 82.3°F 80.5°F
Feb 21 83.0°F 82.3°F 80.4°F
Feb 22 82.5°F 82.7°F 80.0°F
Feb 23 82.8°F 82.7°F 80.3°F
Feb 24 83.0°F 83.5°F 80.5°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 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.