Kiawah Island — Water Temperature in April

Water Temperature Range

15°C

minimum

20°C

average

23°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	2026	2025	2024	2023
APR 1	-10°C	16°C	16°C	17°C
APR 2	17°C	18°C	17°C	17°C
APR 3	17°C	18°C	17°C	17°C
APR 4	18°C	18°C	18°C	16°C
APR 5	18°C	18°C	19°C	17°C
APR 6	19°C	19°C	19°C	17°C
APR 7	19°C	19°C	19°C	17°C
APR 8	19°C	19°C	20°C	17°C
APR 9	18°C	19°C	19°C	17°C
APR 10	18°C	19°C	20°C	18°C
APR 11	18°C	19°C	18°C	19°C
APR 12	18°C	19°C	18°C	19°C
APR 13	18°C	20°C	19°C	19°C
APR 14	19°C	20°C	19°C	19°C
APR 15	19°C	20°C	19°C	19°C
APR 16	20°C	20°C	19°C	20°C
APR 17	20°C	20°C	18°C	19°C
APR 18	20°C	20°C	19°C	19°C
APR 19	20°C	20°C	19°C	20°C
APR 20	21°C	20°C	18°C	19°C
APR 21	21°C	20°C	19°C	20°C
APR 22	21°C	21°C	20°C	20°C
APR 23	20°C	21°C	20°C	19°C
APR 24	20°C	21°C	20°C	20°C
APR 25	21°C	21°C	20°C	20°C
APR 26	21°C	21°C	21°C	19°C
APR 27	21°C	22°C	22°C	19°C
APR 28	21°C	21°C	21°C	19°C
APR 29	22°C	22°C	21°C	21°C
APR 30	21°C	21°C	20°C	20°C

April: Climate and Swimming Opportunities

Average Night Air Temperature

13°C

Average Day Air Temperature

23°C

Precipitation Amount per Month

73 mm

Number of Rainy Days

Daylight per Day

13 hrs

Sunshine per Day

9 hrs

Average Wind Speed

16 km/h

Average Humidity

68%

With such a ratio between the average monthly temperatures of water and air, swimming feels warm and comfortable even if the day isn’t hot. The water can feel warmer than the air, so getting out may feel a bit cool.