Flat Rock — Water Temperature in May

Water Temperature Range

14°C

minimum

17°C

average

20°C

maximum

Water Temperature Chart for May

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

	2025	2024	2023	2022
MAY 1	18°C	19°C	19°C	16°C
MAY 2	18°C	19°C	18°C	16°C
MAY 3	18°C	20°C	18°C	16°C
MAY 4	18°C	18°C	19°C	16°C
MAY 5	17°C	17°C	19°C	15°C
MAY 6	18°C	18°C	18°C	18°C
MAY 7	18°C	17°C	19°C	18°C
MAY 8	18°C	19°C	18°C	17°C
MAY 9	17°C	17°C	18°C	15°C
MAY 10	17°C	18°C	19°C	15°C
MAY 11	17°C	17°C	18°C	17°C
MAY 12	17°C	18°C	18°C	16°C
MAY 13	17°C	18°C	17°C	17°C
MAY 14	17°C	17°C	17°C	17°C
MAY 15	17°C	18°C	17°C	15°C
MAY 16	17°C	18°C	18°C	15°C
MAY 17	18°C	18°C	17°C	18°C
MAY 18	18°C	18°C	18°C	18°C
MAY 19	17°C	18°C	17°C	17°C
MAY 20	18°C	18°C	18°C	18°C
MAY 21	17°C	18°C	17°C	17°C
MAY 22	17°C	18°C	17°C	15°C
MAY 23	16°C	17°C	17°C	15°C
MAY 24	17°C	18°C	18°C	15°C
MAY 25	17°C	18°C	18°C	16°C
MAY 26	17°C	17°C	17°C	16°C
MAY 27	16°C	17°C	16°C	14°C
MAY 28	15°C	16°C	16°C	14°C
MAY 29	16°C	16°C	17°C	14°C
MAY 30	17°C	17°C	17°C	16°C
MAY 31	16°C	17°C	17°C	14°C

Climate and Swimming Opportunities in Flat Rock in May

Average Day Air Temperature

18°C

Average Night Air Temperature

10°C

Precipitation Amount per Month

55 mm

Number of Rainy Days

Daylight per Day

10 hrs

Sunshine per Day

5 hrs

Average Wind Speed

14 km/h

Average Humidity

66%

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.