Lewes — Water Temperature in June

Water Temperature Range

15°C

minimum

20°C

average

25°C

maximum

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

June: Climate and Swimming Opportunities

Average Night Air Temperature

17°C

Average Day Air Temperature

27°C

Precipitation Amount per Month

89 mm

Number of Rainy Days

Daylight per Day

15 hrs

Sunshine per Day

9 hrs

Average Wind Speed

14 km/h

Average Humidity

74%

At such water and air temperatures, swimming is pleasant and refreshing rather than hot. After you get in, it feels comfortable, and you’ll warm up quickly when you come out.