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

68.6

°F

June 6, 18:07

Trend:

stable

Yesterday:

68.9°F

Tomorrow:

68.6°F

Sunrise:

04:58

Sunset:

19:20

Day Length:

14 h. 22 min.

Hiroshima in June

Minimum:

56.2°F

Average:

58.0°F

Maximum:

59.0°F

Sea water temperature in Hiroshima today

As of now, in Hiroshima, the water temperature is 68.6°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 1.3°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

Today's water temperature closely matches the previous two weeks' average, indicating a stable 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 70.2°F on 2021, while the historical minimum was 65.5°F on 2024.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 69.7°F, with minimum temperature starting at 68.6°F, while the maximum might reach 70.5°F.

Daily water temperature in Hiroshima

Date Current Year

actual* / forecast**

last year 10 years average
May 23 66.6°F 66.0°F 65.3°F
May 24 65.0°F 66.3°F 65.2°F
May 25 65.9°F 66.5°F 66.0°F
May 26 68.8°F 65.4°F 66.1°F
May 27 68.5°F 65.2°F 65.9°F
May 28 68.3°F 63.9°F 66.0°F
May 29 68.2°F 64.0°F 66.0°F
May 30 68.9°F 64.6°F 66.0°F
May 31 69.2°F 63.4°F 66.2°F
Jun 1 71.1°F 62.5°F 66.5°F
Jun 2 71.0°F 64.9°F 66.4°F
Jun 3 71.0°F 64.9°F 67.3°F
Jun 4 68.7°F 65.6°F 67.2°F
Jun 5 68.9°F 66.0°F 67.3°F
Jun 6 68.6°F 66.3°F 67.3°F
Jun 7 68.6°F 66.5°F 67.3°F
Jun 8 69.0°F 66.7°F 67.7°F
Jun 9 69.5°F 66.8°F 68.2°F
Jun 10 69.9°F 67.0°F 68.6°F
Jun 11 70.2°F 67.3°F 68.9°F
Jun 12 70.2°F 67.3°F 68.9°F
Jun 13 70.5°F 67.5°F 69.2°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, 58.2°F in Spring, 76.8°F in Summer, and 73.8°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Iwakuni 70.3°F 21mi
Matsuyama 66.9°F 43mi
Fukuyama 70.6°F 53mi
Saijō 71.2°F 54mi
Niihama 71.7°F 58mi

* current water temperature in this city

** straight line distance from Hiroshima