Fernandina Beach — Water Temperature in March

Water Temperature Range

12°C

minimum

16°C

average

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

March: Climate and Swimming Opportunities

Average Night Air Temperature

13°C

Average Day Air Temperature

26°C

Precipitation Amount per Month

93 mm

Number of Rainy Days

Daylight per Day

12 hrs

Sunshine per Day

9 hrs

Average Wind Speed

17 km/h

Average Humidity

71%

With such a ratio between the average monthly temperatures of water and air, the swim feels brisk and very refreshing. The air is warm enough to make the cool water easy to handle, especially for short swims.