Boryeong — Water Temperature in December

Water Temperature Range

4°C

minimum

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

December: Climate and Swimming Opportunities

Average Night Air Temperature

-1°C

Average Day Air Temperature

3°C

Precipitation Amount per Month

11 mm

Number of Rainy Days

Daylight per Day

10 hrs

Sunshine per Day

6 hrs

Average Wind Speed

17 km/h

Average Humidity

63%

At such water and air temperatures, swimming is extremely harsh and generally not enjoyable. The risk of rapid chilling is high, so most people avoid entering the water.