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 19.12°C. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool.

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.

66.4

°F

October 15, 22:35

Trend:

decreasing

Yesterday:

66.8°F

Tomorrow:

66.4°F

Sunrise:

05:47

Sunset:

18:35

Day Length:

12 h. 48 min.

Porto Alegre in October

Minimum:

77.2°F

Average:

79.3°F

Maximum:

81.1°F

Sea water temperature in Porto Alegre today

As of now, in Porto Alegre, the water temperature is 66.4°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 2.3°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

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 73.0°F on 2019, while the historical minimum was 65.8°F on 2022.

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. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 66.8°F, with minimum temperature starting at 66.4°F, while the maximum might reach 67.2°F.

Daily water temperature in Porto Alegre

Date	Current Year actual* / forecast**	last year	10 years average
Oct 1	66.5°F	65.6°F	66.7°F
Oct 2	65.1°F	65.3°F	66.8°F
Oct 3	65.2°F	65.5°F	66.8°F
Oct 4	64.8°F	67.2°F	67.1°F
Oct 5	64.9°F	68.7°F	67.3°F
Oct 6	64.7°F	69.2°F	67.2°F
Oct 7	65.6°F	69.2°F	67.3°F
Oct 8	66.8°F	68.5°F	67.3°F
Oct 9	67.0°F	68.8°F	67.4°F
Oct 10	66.7°F	69.0°F	67.8°F
Oct 11	66.6°F	69.0°F	68.0°F
Oct 12	66.4°F	69.2°F	68.2°F
Oct 13	66.5°F	71.4°F	68.6°F
Oct 14	66.8°F	70.5°F	68.6°F
Oct 15	66.4°F	70.0°F	68.8°F
Oct 16	66.4°F	69.4°F	68.7°F
Oct 17	66.8°F	69.9°F	69.1°F
Oct 18	66.7°F	70.4°F	69.1°F
Oct 19	66.7°F	69.8°F	69.0°F
Oct 20	67.1°F	69.3°F	69.4°F
Oct 21	67.0°F	68.1°F	69.3°F
Oct 22	67.2°F	68.8°F	69.6°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, 60.8°F in Summer, and 68.8°F in Autumn.