Bouin — Water Temperature in September

Water Temperature Range

15°C

minimum

19°C

average

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

September: Climate and Swimming Opportunities

Average Night Air Temperature

13°C

Average Day Air Temperature

22°C

Precipitation Amount per Month

59 mm

Number of Rainy Days

Daylight per Day

12 hrs

Sunshine per Day

6 hrs

Average Wind Speed

16 km/h

Average Humidity

80%

At such water and air temperatures, swimming feels cool and invigorating. It’s comfortable for a quick dip, and you’ll feel fine as long as you warm up soon after.