Hokkaido — Water Temperature in October

Water Temperature Range

7°C

minimum

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

October: Climate and Swimming Opportunities

Average Night Air Temperature

7°C

Average Day Air Temperature

16°C

Precipitation Amount per Month

112 mm

Number of Rainy Days

Daylight per Day

11 hrs

Sunshine per Day

5 hrs

Average Wind Speed

13 km/h

Average Humidity

71%

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.