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Hiroshima Sea Temperature in April

Hiroshima, Japan

March Hiroshima year-round → May

Average sea temperature for Hiroshima, Japan across April, based on 10 years of daily readings.

Average

13.95° C

High

17.46° C

Low

11.58° C

Water at this temperature is cold and will feel very cold initially, but the body will get used to it and longer swims are possible. Experienced swimmers can manage several hours of swimming, however hypothermia is still a real risk.

April is the 9th warmest of 12 months at Hiroshima. On average the water sits 5.0° than the year-round mean of 18.91° C.

Compared to March, April is 2.3° warmer than (11.69° C in March). By May the water is usually 16.68° C.

Hiroshima Day-by-Day Water Temperature in April

10-year low, average and high

10.5° C
12.5° C
14.5° C
16.5° C
18.5° C
1
5
10
15
20
25
30
Day-by-day low and high band with the 10-year daily average through April. Range Average

Each vertical bar above is one day of April. 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 Hiroshima.

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.

April Water Temperature Table for Hiroshima

10-year daily averages

Day Average Low High
April 1 12.7° C 11.64° C 13.68° C
April 2 12.66° C 11.65° C 13.64° C
April 3 12.76° C 11.84° C 13.72° C
April 4 12.88° C 11.58° C 13.85° C
April 5 13.03° C 11.84° C 14.03° C
April 6 13.13° C 12.32° C 13.76° C
April 7 13.05° C 12.22° C 13.65° C
April 8 13.28° C 12.3° C 13.92° C
April 9 13.44° C 12.65° C 14.1° C
April 10 13.51° C 13.01° C 14.11° C
April 11 13.7° C 13.2° C 14.43° C
April 12 13.79° C 13.2° C 14.42° C
April 13 13.92° C 12.83° C 15.07° C
April 14 13.92° C 12.45° C 14.88° C
April 15 14.02° C 12.26° C 14.96° C
April 16 14.02° C 12.3° C 15.08° C
April 17 13.99° C 12.32° C 15.11° C
April 18 14.18° C 12.76° C 15.39° C
April 19 14.37° C 13.21° C 15.71° C
April 20 14.64° C 13.82° C 15.81° C
April 21 14.65° C 13.68° C 15.94° C
April 22 14.62° C 13.35° C 16.05° C
April 23 14.6° C 13.45° C 16.16° C
April 24 14.54° C 13.5° C 15.64° C
April 25 14.66° C 13.52° C 16.32° C
April 26 14.7° C 13.82° C 16.57° C
April 27 14.87° C 14.16° C 17.46° C
April 28 14.98° C 14.06° C 17.34° C
April 29 15.07° C 14.03° C 17.13° C
April 30 15.03° C 13.98° C 17.2° C

Where April Sits in the Year

April highlighted

7.5° C
13.5° C
19.5° C
25.5° C
31.5° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
13.49° C
11.64° C
11.69° C
13.95° C
16.68° C
20.28° C
24.33° C
26.78° C
26.38° C
23.84° C
20.76° C
17.1° C
10-year monthly history for Hiroshima. 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 April

Compare other Japan water for the same month

Hiroshima Location

34.3500, 132.4670

34.35000, 132.46699 View on OpenStreetMap →

Hiroshima sits at 34.3500°N, 132.4670°E, on the coast of 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 Hiroshima