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Kozu Sima Sea Temperature in March

Tokyo, Japan

February Kozu Sima year-round → April

Average sea temperature for Kozu Sima, Japan across March, based on 10 years of daily readings.

Average

18.6° C

High

20.85° C

Low

15.44° 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.

March is the 12th warmest of 12 months at Kozu Sima. On average the water sits 4.5° than the year-round mean of 23.09° C.

Compared to February, March is 0.2° about the same as (18.76° C in February). By April the water is usually 19.88° C.

Kozu Sima Day-by-Day Water Temperature in March

10-year low, average and high

14.5° C
16.4° C
18.3° C
20.1° C
22.0° C
1
5
10
15
20
25
31
Day-by-day low and high band with the 10-year daily average through March. Range Average

Each vertical bar above is one day of March. 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 Kozu Sima.

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.

March Water Temperature Table for Kozu Sima

10-year daily averages

Day Average Low High
March 1 19.03° C 17.46° C 20.49° C
March 2 19.11° C 17.49° C 20.32° C
March 3 19.05° C 17.27° C 20.17° C
March 4 18.85° C 17.15° C 20.16° C
March 5 18.82° C 17.06° C 20.19° C
March 6 18.73° C 16.74° C 19.57° C
March 7 18.74° C 16.25° C 19.8° C
March 8 18.64° C 16.16° C 19.73° C
March 9 18.59° C 16° C 19.74° C
March 10 18.56° C 15.7° C 19.91° C
March 11 18.55° C 15.44° C 19.99° C
March 12 18.56° C 15.48° C 19.98° C
March 13 18.56° C 15.47° C 20° C
March 14 18.6° C 15.62° C 20.01° C
March 15 18.59° C 15.86° C 20.03° C
March 16 18.57° C 15.99° C 20.07° C
March 17 18.46° C 16.14° C 20.03° C
March 18 18.45° C 16.11° C 19.92° C
March 19 18.46° C 16.09° C 19.83° C
March 20 18.44° C 16.17° C 19.88° C
March 21 18.44° C 16.09° C 20.13° C
March 22 18.43° C 15.9° C 20.37° C
March 23 18.35° C 16.17° C 20.25° C
March 24 18.25° C 16.24° C 20.14° C
March 25 18.41° C 16.45° C 20.07° C
March 26 18.47° C 16.92° C 20.01° C
March 27 18.54° C 17.25° C 20.14° C
March 28 18.6° C 17.55° C 20.15° C
March 29 18.61° C 17.66° C 20.3° C
March 30 18.54° C 17.44° C 20.47° C
March 31 18.54° C 17.5° C 20.85° C

Where March Sits in the Year

March highlighted

13.0° C
18.0° C
23.0° C
28.0° C
33.0° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
19.67° C
18.76° C
18.6° C
19.88° C
21.38° C
24.21° C
26.68° C
28.35° C
27.97° C
25.94° C
23.91° C
21.67° C
10-year monthly history for Kozu Sima. 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 March

Compare other Japan water for the same month

Kozu Sima Location

34.2167, 139.1330

34.21670, 139.13300 View on OpenStreetMap →

Kozu Sima sits at 34.2167°N, 139.1330°E, on the coast of Tokyo, 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 Kozu Sima