Athens — Water Temperature in January

Water Temperature Range

14°C

minimum

16°C

average

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

January: Climate and Swimming Opportunities

Average Night Air Temperature

7°C

Average Day Air Temperature

13°C

Precipitation Amount per Month

51 mm

Number of Rainy Days

Daylight per Day

10 hrs

Sunshine per Day

4 hrs

Average Wind Speed

15 km/h

Average Humidity

73%

With such a ratio between the average monthly temperatures of water and air, swimming usually feels uncomfortably cold. Even a short dip can leave you chilled, especially once you get out into the cool air.