Seoul — Water Temperature in July

Water Temperature Range

17°C

minimum

21°C

average

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

July: Climate and Swimming Opportunities

Average Night Air Temperature

21°C

Average Day Air Temperature

28°C

Precipitation Amount per Month

361 mm

Number of Rainy Days

Daylight per Day

14 hrs

Sunshine per Day

5 hrs

Average Wind Speed

8 km/h

Average Humidity

82%

At such water and air temperatures, swimming is pleasant and refreshing rather than hot. After you get in, it feels comfortable, and you’ll warm up quickly when you come out.