Walberswick — Water Temperature in September

Water Temperature Range

15°C

minimum

17°C

average

20°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	2025	2024	2023	2022
SEP 1	18°C	18°C	18°C	18°C
SEP 2	18°C	19°C	19°C	15°C
SEP 3	18°C	18°C	17°C	17°C
SEP 4	18°C	18°C	18°C	16°C
SEP 5	17°C	18°C	18°C	15°C
SEP 6	18°C	18°C	18°C	16°C
SEP 7	17°C	18°C	18°C	15°C
SEP 8	17°C	17°C	18°C	15°C
SEP 9	18°C	18°C	18°C	16°C
SEP 10	18°C	18°C	18°C	18°C
SEP 11	18°C	18°C	17°C	18°C
SEP 12	17°C	18°C	17°C	15°C
SEP 13	17°C	18°C	16°C	15°C
SEP 14	17°C	18°C	15°C	17°C
SEP 15	17°C	18°C	15°C	17°C
SEP 16	17°C	18°C	16°C	17°C
SEP 17	17°C	17°C	16°C	18°C
SEP 18	17°C	18°C	15°C	17°C
SEP 19	17°C	16°C	18°C	17°C
SEP 20	17°C	16°C	18°C	15°C
SEP 21	17°C	17°C	19°C	16°C
SEP 22	18°C	17°C	18°C	18°C
SEP 23	17°C	17°C	19°C	16°C
SEP 24	17°C	17°C	19°C	15°C
SEP 25	17°C	17°C	18°C	15°C
SEP 26	17°C	16°C	18°C	17°C
SEP 27	17°C	16°C	18°C	18°C
SEP 28	17°C	16°C	18°C	15°C
SEP 29	17°C	16°C	17°C	18°C
SEP 30	17°C	16°C	18°C	15°C

September: Climate and Swimming Opportunities

Average Night Air Temperature

10°C

Average Day Air Temperature

19°C

Precipitation Amount per Month

50 mm

Number of Rainy Days

Daylight per Day

13 hrs

Sunshine per Day

5 hrs

Average Wind Speed

14 km/h

Average Humidity

83%

At such water and air temperatures, swimming often feels chilly and is best for short swims. Getting out can feel cold, so it helps to have dry clothes ready right away.