Saint Augustine — Water Temperature in January

Water Temperature Range

12°C

minimum

15°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	2026	2025	2024	2023
JAN 1	16°C	18°C	19°C	16°C
JAN 2	17°C	17°C	18°C	12°C
JAN 3	16°C	16°C	18°C	14°C
JAN 4	16°C	17°C	17°C	15°C
JAN 5	16°C	16°C	18°C	15°C
JAN 6	16°C	15°C	18°C	16°C
JAN 7	16°C	16°C	17°C	15°C
JAN 8	16°C	15°C	17°C	14°C
JAN 9	16°C	15°C	17°C	13°C
JAN 10	16°C	16°C	17°C	16°C
JAN 11	17°C	15°C	16°C	12°C
JAN 12	17°C	15°C	16°C	12°C
JAN 13	17°C	15°C	16°C	13°C
JAN 14	17°C	15°C	16°C	13°C
JAN 15	17°C	15°C	16°C	16°C
JAN 16	17°C	15°C	16°C	13°C
JAN 17	16°C	14°C	16°C	16°C
JAN 18	16°C	14°C	16°C	15°C
JAN 19	17°C	14°C	16°C	12°C
JAN 20	16°C	13°C	16°C	14°C
JAN 21	17°C	15°C	16°C	16°C
JAN 22	16°C	14°C	16°C	12°C
JAN 23	15°C	14°C	16°C	12°C
JAN 24	15°C	14°C	16°C	15°C
JAN 25	15°C	14°C	16°C	14°C
JAN 26	15°C	13°C	16°C	12°C
JAN 27	16°C	13°C	17°C	13°C
JAN 28	15°C	13°C	17°C	16°C
JAN 29	15°C	12°C	16°C	13°C
JAN 30	15°C	13°C	16°C	14°C
JAN 31	15°C	13°C	17°C	16°C

January: Climate and Swimming Opportunities

Average Night Air Temperature

9°C

Average Day Air Temperature

23°C

Precipitation Amount per Month

67 mm

Number of Rainy Days

Daylight per Day

10 hrs

Sunshine per Day

7 hrs

Average Wind Speed

16 km/h

Average Humidity

75%

With such a ratio between the average monthly temperatures of water and air, swimming feels very cold and is only for cold-water enthusiasts. Most people will prefer just a brief splash, because warming up afterward can take time.