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 12.38°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.

54.3

°F

July 6, 00:53

Trend:

stable

Yesterday:

54.7°F

Tomorrow:

54.3°F

Sunrise:

07:21

Sunset:

17:38

Day Length:

10 h. 17 min.

Porto Alegre in July

Minimum:

76.6°F

Average:

79.0°F

Maximum:

81.5°F

Sea water temperature in Porto Alegre today

As of now, in Porto Alegre, the water temperature is 54.3°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 4.6°F lower 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 considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 62.2°F on 2023, while the historical minimum was 55.7°F on 2021.

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 minimum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 54.6°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 22	60.4°F	65.0°F	61.0°F
Jun 23	60.5°F	66.0°F	61.0°F
Jun 24	60.5°F	65.7°F	61.0°F
Jun 25	59.9°F	65.3°F	61.1°F
Jun 26	60.1°F	64.8°F	60.9°F
Jun 27	59.8°F	64.0°F	60.7°F
Jun 28	59.1°F	63.8°F	60.9°F
Jun 29	59.0°F	63.4°F	60.7°F
Jun 30	58.9°F	61.9°F	60.4°F
Jul 1	58.5°F	60.7°F	60.1°F
Jul 2	58.0°F	59.9°F	59.8°F
Jul 3	57.8°F	57.5°F	59.4°F
Jul 4	56.7°F	57.3°F	59.0°F
Jul 5	54.7°F	57.2°F	59.3°F
Jul 6	54.3°F	56.9°F	58.8°F
Jul 7	54.3°F	56.8°F	58.9°F
Jul 8	54.4°F	57.2°F	59.0°F
Jul 9	54.7°F	57.3°F	59.2°F
Jul 10	54.7°F	57.3°F	59.2°F
Jul 11	54.7°F	57.3°F	59.3°F
Jul 12	54.8°F	57.4°F	59.4°F
Jul 13	55.0°F	57.5°F	59.5°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 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 June 20, 2016, dipping to 55.0°F. The average readings by season are 79.1°F in Winter, 73.3°F in Spring, 61.0°F in Summer, and 68.7°F in Autumn.