What is the current water temperature in Porto Alegre?

Q: What is the current water temperature in Porto Alegre?

As of now, in Porto Alegre, the water temperature is 28.19°C. 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.

Brazil > Porto Alegre

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.

82.7

°F

January 3, 04:26

Trend:

stable

Yesterday:

82.2°F

Tomorrow:

82.7°F

Sunrise:

06:29

Sunset:

20:30

Day Length:

14 h. 1 min.

Porto Alegre in January

Minimum:

76.8°F

Average:

79.5°F

Maximum:

84.0°F

Sea water temperature in Porto Alegre today

As of now, in Porto Alegre, the water temperature is 82.7°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 3.1°F higher 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

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 82.7°F on 2020, while the historical minimum was 77.1°F on 2018.

latest data

last year

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. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 82.3°F, the minimum temperature may reach 82.0°F, and the maximum might stay at 82.7°F.

Daily water temperature in Porto Alegre

Date	Current Year actual* / forecast**	last year	10 years average
Jan 1	81.2°F	77.3°F	79.5°F
Jan 2	82.2°F	77.1°F	79.2°F
Jan 3	82.7°F	80.2°F	79.7°F
Jan 4	82.7°F	80.7°F	79.6°F
Jan 5	82.4°F	80.4°F	79.4°F
Jan 6	82.4°F	79.4°F	79.4°F
Jan 7	82.2°F	79.4°F	79.1°F
Jan 8	82.1°F	80.0°F	79.0°F
Jan 9	82.0°F	79.5°F	79.0°F
Jan 10	82.4°F	79.7°F	79.3°F
Dec 20	79.7°F	76.0°F	77.9°F
Dec 21	79.0°F	78.0°F	77.9°F
Dec 22	78.6°F	78.0°F	78.0°F
Dec 23	78.1°F	77.0°F	77.9°F
Dec 24	77.7°F	76.7°F	78.0°F
Dec 25	77.2°F	76.6°F	78.0°F
Dec 26	76.9°F	77.1°F	78.1°F
Dec 27	76.7°F	77.4°F	78.0°F
Dec 28	76.6°F	77.8°F	78.0°F
Dec 29	76.5°F	77.8°F	78.5°F
Dec 30	76.6°F	78.4°F	78.4°F
Dec 31	79.2°F	77.5°F	79.2°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 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.