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Setana Sea Temperature in October

Hokkaido, Japan

September Setana year-round → November

Average sea temperature for Setana, Japan across October, based on 10 years of daily readings.

Average

18.94° C

High

23.44° C

Low

15.45° C

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

October is the 4th warmest of 12 months at Setana. On average the water sits 4.3° than the year-round mean of 14.6° C.

Compared to September, October is 4.0° cooler than (22.96° C in September). By November the water is usually 14.29° C.

Setana Day-by-Day Water Temperature in October

10-year low, average and high

14.0° C
16.8° C
19.5° C
22.3° C
25.0° C
1
5
10
15
20
25
31
Day-by-day low and high band with the 10-year daily average through October. Range Average

Each vertical bar above is one day of October. The shaded band covers the range the water has reached on that day across the last 10 years — the lowest reading at the bottom, the highest at the top. The line running through the bars is the daily average over those 10 years, so you can see the typical shape of the month at Setana.

A narrow band means the temperature on that day has stayed close to the average year on year. A taller band means it has swung more, often because of changeable weather around that time of year. Hovering a day pulls up its low, average, and high.

October Water Temperature Table for Setana

10-year daily averages

Day Average Low High
October 1 21.42° C 19.44° C 23.44° C
October 2 21.41° C 19.25° C 23.2° C
October 3 21.34° C 19.11° C 22.92° C
October 4 21.23° C 18.56° C 22.63° C
October 5 21.11° C 18.29° C 22.55° C
October 6 20.86° C 18.25° C 22.4° C
October 7 20.55° C 17.85° C 22.29° C
October 8 20.3° C 17.69° C 22.16° C
October 9 20.25° C 17.62° C 22.12° C
October 10 20.15° C 17.63° C 22.11° C
October 11 19.99° C 17.79° C 21.64° C
October 12 19.69° C 17.89° C 20.97° C
October 13 19.41° C 17.86° C 20.57° C
October 14 19.26° C 17.87° C 20.46° C
October 15 19.02° C 17.58° C 19.96° C
October 16 18.85° C 17.3° C 20.05° C
October 17 18.7° C 17.16° C 20.01° C
October 18 18.54° C 16.98° C 19.94° C
October 19 18.26° C 16.69° C 19.68° C
October 20 18.1° C 16.66° C 19.38° C
October 21 18.02° C 16.7° C 19.22° C
October 22 17.78° C 16.76° C 19.07° C
October 23 17.68° C 16.6° C 18.93° C
October 24 17.54° C 16.28° C 18.73° C
October 25 17.28° C 16.15° C 18.55° C
October 26 16.86° C 15.68° C 17.48° C
October 27 16.91° C 15.88° C 17.59° C
October 28 16.86° C 15.89° C 17.63° C
October 29 16.75° C 15.75° C 17.69° C
October 30 16.6° C 15.6° C 17.81° C
October 31 16.46° C 15.45° C 17.87° C

Where October Sits in the Year

October highlighted

2.5° C
9.1° C
15.8° C
22.4° C
29.0° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
9.57° C
8.35° C
8.12° C
9.43° C
11.96° C
16° C
20.64° C
23.33° C
22.96° C
18.94° C
14.29° C
11.58° C
10-year monthly history for Setana. Bars span historical low to high; the line marks the monthly average. Range Average
January → February → March → April → May → June → July → August → September → October → November → December →

Nearby Locations in October

Compare other Japan water for the same month

Setana Location

42.4500, 139.8500

42.45000, 139.85001 View on OpenStreetMap →

Setana sits at 42.4500°N, 139.8500°E, on the coast of Hokkaido, Japan. The marker on the map shows the spot the readings on this page come from. It usually sits a short distance from the town centre, out on the open water itself, so the numbers stay tied to the coast rather than a generic point inland.

Coastlines bend, headlands focus the water, and the temperature can run noticeably differently between two beaches that look close together on a map. Comparing nearby locations is a quick way to see how local geography is shaping the readings.

Nearest locations to Setana