Dauphin Island — Water Temperature in December

Water Temperature Range

12°C

minimum

17°C

average

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

December: Climate and Swimming Opportunities

Average Night Air Temperature

8°C

Average Day Air Temperature

18°C

Precipitation Amount per Month

107 mm

Number of Rainy Days

Daylight per Day

10 hrs

Sunshine per Day

5 hrs

Average Wind Speed

14 km/h

Average Humidity

75%

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.