Nagasaki — Water Temperature in October

Water Temperature Range

21°C

minimum

25°C

average

27°C

maximum

Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

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

October: Climate and Swimming Opportunities

Average Night Air Temperature

15°C

Average Day Air Temperature

23°C

Precipitation Amount per Month

85 mm

Number of Rainy Days

Daylight per Day

11 hrs

Sunshine per Day

6 hrs

Average Wind Speed

12 km/h

Average Humidity

73%

At such water and air temperatures, swimming feels truly comfortable and relaxing. The warm water won’t cool you down, so you can stay in for a long time without getting chilled.