Porto Alegre — Water Temperature in October

Water Temperature Range

17°C

minimum

20°C

average

23°C

maximum

Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

Water Temperature Chart for Month

The chart shows the average daily water temperature for each day of the month based on historical data.

Table of Water Temperatures by Day of the Month for Previous Years

Day	2026	2025	2024	2023
OCT 1	-	14°C	17°C	20°C
OCT 2	16°C	19°C	18°C	20°C
OCT 3	15°C	19°C	18°C	20°C
OCT 4	15°C	19°C	18°C	20°C
OCT 5	15°C	20°C	19°C	20°C
OCT 6	15°C	20°C	19°C	20°C
OCT 7	15°C	20°C	19°C	21°C
OCT 8	15°C	20°C	21°C	20°C
OCT 9	15°C	20°C	21°C	20°C
OCT 10	15°C	20°C	20°C	20°C
OCT 11	15°C	20°C	19°C	20°C
OCT 12	15°C	20°C	19°C	20°C
OCT 13	15°C	20°C	20°C	20°C
OCT 14	15°C	20°C	20°C	21°C
OCT 15	15°C	20°C	20°C	20°C
OCT 16	15°C	20°C	21°C	20°C
OCT 17	15°C	20°C	19°C	21°C
OCT 18	16°C	20°C	20°C	21°C
OCT 19	-	21°C	21°C	21°C
OCT 20	-	20°C	20°C	21°C
OCT 21	-	20°C	20°C	21°C
OCT 22	-	20°C	20°C	20°C
OCT 23	-	20°C	19°C	20°C
OCT 24	-	20°C	20°C	20°C
OCT 25	-	20°C	20°C	21°C
OCT 26	-	20°C	19°C	21°C
OCT 27	-	20°C	21°C	20°C
OCT 28	-	21°C	20°C	22°C
OCT 29	-	21°C	20°C	22°C
OCT 30	-	21°C	21°C	22°C
OCT 31	-	21°C	21°C	21°C

October: Climate and Swimming Opportunities

Average Night Air Temperature

11°C

Average Day Air Temperature

23°C

Precipitation Amount per Month

194 mm

Number of Rainy Days

Daylight per Day

13 hrs

Sunshine per Day

6 hrs

Average Wind Speed

9 km/h

Average Humidity

80%

With such a ratio between the average monthly temperatures of water and air, swimming feels warm and comfortable even if the day isn’t hot. The water can feel warmer than the air, so getting out may feel a bit cool.