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 13.72°C. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

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.

56.7

°F

July 9, 15:53

Trend:

stable

Yesterday:

56.2°F

Tomorrow:

56.6°F

Sunrise:

07:21

Sunset:

17:39

Day Length:

10 h. 18 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 56.7°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 2.2°F lower 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

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 62.0°F on 2023, while the historical minimum was 56.3°F on 2025.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 57.0°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
Jun 25	58.7°F	59.9°F	60.9°F
Jun 26	57.4°F	60.1°F	60.7°F
Jun 27	57.0°F	59.8°F	60.4°F
Jun 28	55.1°F	59.1°F	60.4°F
Jun 29	55.9°F	59.0°F	60.3°F
Jun 30	56.6°F	58.9°F	60.1°F
Jul 1	56.9°F	58.5°F	59.8°F
Jul 2	56.2°F	58.0°F	59.5°F
Jul 3	56.5°F	57.8°F	59.1°F
Jul 4	56.1°F	56.7°F	58.6°F
Jul 5	55.4°F	54.7°F	58.5°F
Jul 6	54.4°F	55.1°F	58.1°F
Jul 7	56.1°F	55.8°F	58.3°F
Jul 8	56.2°F	56.1°F	58.4°F
Jul 9	56.7°F	56.3°F	58.9°F
Jul 10	56.6°F	56.4°F	58.9°F
Jul 11	56.7°F	56.4°F	58.9°F
Jul 12	56.8°F	56.5°F	59.0°F
Jul 13	56.9°F	56.7°F	59.1°F
Jul 14	57.0°F	56.7°F	59.2°F
Jul 15	57.4°F	57.2°F	59.6°F
Jul 16	57.4°F	57.3°F	59.6°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 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.