Cumberland Island — Water Temperature in January

Water Temperature Range

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

January: Climate and Swimming Opportunities

Average Night Air Temperature

7°C

Average Day Air Temperature

17°C

Precipitation Amount per Month

117 mm

Number of Rainy Days

Daylight per Day

10 hrs

Sunshine per Day

5 hrs

Average Wind Speed

14 km/h

Average Humidity

73%

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.