Yeosu Strait — Water Temperature in January

Water Temperature Range

9°C

minimum

12°C

average

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

January: Climate and Swimming Opportunities

Average Night Air Temperature

-2°C

Average Day Air Temperature

8°C

Precipitation Amount per Month

35 mm

Number of Rainy Days

Daylight per Day

10 hrs

Sunshine per Day

6 hrs

Average Wind Speed

12 km/h

Average Humidity

54%

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.