Folly Beach — Water Temperature in May

Water Temperature Range

19°C

minimum

23°C

average

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

May: Climate and Swimming Opportunities

Average Night Air Temperature

18°C

Average Day Air Temperature

27°C

Precipitation Amount per Month

74 mm

Number of Rainy Days

Daylight per Day

14 hrs

Sunshine per Day

9 hrs

Average Wind Speed

16 km/h

Average Humidity

73%

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.