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Kiritappu Sea Temperature in September

Hokkaido, Japan

August Kiritappu year-round → October

Average sea temperature for Kiritappu, Japan across September, based on 10 years of daily readings.

Average

17.55° C

High

22.45° C

Low

14.19° 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.

September is the 2nd warmest of 12 months at Kiritappu. On average the water sits 8.6° than the year-round mean of 8.94° C.

Compared to August, September is 0.8° cooler than (18.38° C in August). By October the water is usually 14.48° C.

Kiritappu Day-by-Day Water Temperature in September

10-year low, average and high

12.5° C
15.4° C
18.3° C
21.1° C
24.0° C
1
5
10
15
20
25
30
Day-by-day low and high band with the 10-year daily average through September. Range Average

Each vertical bar above is one day of September. 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 Kiritappu.

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.

September Water Temperature Table for Kiritappu

10-year daily averages

Day Average Low High
September 1 17.69° C 15.04° C 22.26° C
September 2 17.69° C 15.62° C 22.42° C
September 3 17.78° C 15.96° C 22.08° C
September 4 17.98° C 16° C 22.45° C
September 5 18.04° C 16.02° C 22.34° C
September 6 18.3° C 16.09° C 21.87° C
September 7 18.56° C 16.25° C 21.56° C
September 8 18.69° C 16.25° C 21.4° C
September 9 18.62° C 16.46° C 20.87° C
September 10 18.44° C 16.63° C 20.56° C
September 11 18.14° C 16.16° C 20.81° C
September 12 18.13° C 15.54° C 20.94° C
September 13 17.98° C 15.94° C 21.06° C
September 14 17.8° C 15.81° C 21.03° C
September 15 17.6° C 15.89° C 21.01° C
September 16 17.69° C 16.15° C 20.89° C
September 17 17.72° C 15.7° C 20.91° C
September 18 17.68° C 15.13° C 20.58° C
September 19 17.62° C 15.36° C 19.91° C
September 20 17.37° C 15.37° C 19.2° C
September 21 17.14° C 15.37° C 19.55° C
September 22 16.99° C 15.48° C 18.92° C
September 23 16.85° C 15.26° C 18.65° C
September 24 16.68° C 14.37° C 18.72° C
September 25 16.65° C 14.25° C 18.86° C
September 26 16.67° C 14.44° C 18.8° C
September 27 16.54° C 14.59° C 18.77° C
September 28 16.44° C 14.36° C 18.71° C
September 29 16.48° C 14.19° C 18.62° C
September 30 16.49° C 14.26° C 18.57° C

Where September Sits in the Year

September highlighted

-4.0° C
3.5° C
11.0° C
18.5° C
26.0° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
2.31° C
0.91° C
1.34° C
3.1° C
5.95° C
10.6° C
15.48° C
18.38° C
17.55° C
14.48° C
10.85° C
6.32° C
10-year monthly history for Kiritappu. 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 September

Compare other Japan water for the same month

Kiritappu Location

43.0833, 145.1330

43.08330, 145.13300 View on OpenStreetMap →

Kiritappu sits at 43.0833°N, 145.1330°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 Kiritappu