All data are in degrees Fahrenheit

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Water temperature in Hiroshima

Detailed information about the current water temperature in Hiroshima. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Hiroshima now

54.3

°F

March 25, 22:04

Trend:

increasing

Yesterday:

54.1°F

Tomorrow:

54.7°F

Sunrise:

06:08

Sunset:

18:25

Day Length:

12 h. 17 min.

Hiroshima in April

Minimum:

56.2°F

Average:

58.3°F

Maximum:

59.4°F

Sea water temperature in Hiroshima today

As of now, in Hiroshima, the water temperature is 54.3°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 0.5°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 54.9°F on 2016, while the historical minimum was 52.3°F on 2018.

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 55.2°F, with minimum temperature starting at 54.6°F, while the maximum might reach 56.3°F.

Daily water temperature in Hiroshima

Date Current Year

actual* / forecast**

last year 10 years average
Mar 11 52.2°F 51.2°F 53.0°F
Mar 12 52.1°F 51.6°F 53.3°F
Mar 13 52.4°F 52.0°F 53.5°F
Mar 14 53.2°F 53.7°F 53.9°F
Mar 15 50.6°F 53.9°F 53.3°F
Mar 16 51.4°F 53.9°F 53.2°F
Mar 17 52.7°F 53.5°F 53.5°F
Mar 18 52.3°F 53.6°F 53.5°F
Mar 19 52.9°F 53.8°F 53.6°F
Mar 20 54.8°F 53.0°F 53.8°F
Mar 21 53.6°F 52.0°F 53.9°F
Mar 22 53.2°F 52.0°F 53.7°F
Mar 23 53.9°F 52.2°F 53.9°F
Mar 24 54.1°F 55.6°F 54.2°F
Mar 25 54.3°F 54.0°F 53.9°F
Mar 26 54.7°F 54.8°F 54.2°F
Mar 27 54.6°F 56.2°F 54.1°F
Mar 28 54.9°F 56.1°F 54.4°F
Mar 29 55.0°F 56.3°F 54.6°F
Mar 30 55.1°F 56.5°F 54.6°F
Mar 31 55.6°F 56.6°F 55.1°F
Apr 1 56.3°F 56.7°F 55.8°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Hiroshima by month

In Hiroshima, the months July through October offer comfortable swimming conditions, which amounts to 114 swimming days.
The warmest water in Hiroshima was recorded on August 3, 2024, reaching a 86.4°F. While the coldest temperature occurred on March 7, 2026, dipping to 49.0°F. The average readings by season are 56.9°F in Winter, 58.1°F in Spring, 76.8°F in Summer, and 73.8°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Iwakuni 54.1°F 21mi
Matsuyama 53.9°F 43mi
Fukuyama 52.9°F 53mi
Saijō 54.7°F 54mi
Niihama 53.8°F 58mi

* current water temperature in this city

** straight line distance from Hiroshima