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 28.15°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 17, 04:17

Trend:

increasing

Yesterday:

82.5°F

Tomorrow:

82.7°F

Sunrise:

06:40

Sunset:

20:30

Day Length:

13 h. 50 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 2.0°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 also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 84.9°F on 2022, while the historical minimum was 78.7°F on 2019.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 82.5°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
Jan 3	81.8°F	80.2°F	79.9°F
Jan 4	80.6°F	80.7°F	79.7°F
Jan 5	79.8°F	80.4°F	79.4°F
Jan 6	78.2°F	79.4°F	79.3°F
Jan 7	79.5°F	79.4°F	79.2°F
Jan 8	79.2°F	80.0°F	79.1°F
Jan 9	79.4°F	79.5°F	79.0°F
Jan 10	79.4°F	79.7°F	79.3°F
Jan 11	79.3°F	79.2°F	79.4°F
Jan 12	80.0°F	78.6°F	79.5°F
Jan 13	79.5°F	78.3°F	79.7°F
Jan 14	81.1°F	78.7°F	79.9°F
Jan 15	82.8°F	78.6°F	80.1°F
Jan 16	82.5°F	79.6°F	80.5°F
Jan 17	82.7°F	79.1°F	80.7°F
Jan 18	82.7°F	80.7°F	80.7°F
Jan 19	82.4°F	81.2°F	80.5°F
Jan 20	82.5°F	82.4°F	80.6°F
Jan 21	82.6°F	82.9°F	80.6°F
Jan 22	82.4°F	83.7°F	80.5°F
Jan 23	82.6°F	83.2°F	80.6°F
Jan 24	82.6°F	83.2°F	80.6°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.