St. Simons Island — Water Temperature in March

Water Temperature Range

12°C

minimum

16°C

average

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

March: Climate and Swimming Opportunities

Average Night Air Temperature

9°C

Average Day Air Temperature

20°C

Precipitation Amount per Month

91 mm

Number of Rainy Days

Daylight per Day

12 hrs

Sunshine per Day

8 hrs

Average Wind Speed

14 km/h

Average Humidity

68%

At such water and air temperatures, swimming feels cool and invigorating. It’s comfortable for a quick dip, and you’ll feel fine as long as you warm up soon after.