All data are in degrees Fahrenheit

en

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

59.5

°F

April 1, 06:17

Trend:

stable

Yesterday:

58.7°F

Tomorrow:

59.1°F

Sunrise:

05:59

Sunset:

18:31

Day Length:

12 h. 32 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 59.5°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 3.7°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 fall 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 is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 58.4°F on 2021, while the historical minimum was 53.2°F on 2022.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the histoorical minimum and others when it was close to the historical maximum. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 59.3°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Hiroshima

Date Current Year

actual* / forecast**

last year 10 years average
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 54.8°F 54.8°F 54.3°F
Mar 27 55.0°F 56.2°F 54.2°F
Mar 28 55.0°F 56.1°F 54.5°F
Mar 29 55.4°F 56.3°F 54.6°F
Mar 30 55.7°F 56.5°F 54.7°F
Mar 31 58.7°F 56.6°F 55.1°F
Apr 1 59.5°F 56.7°F 55.8°F
Apr 2 59.1°F 56.8°F 55.4°F
Apr 3 58.9°F 54.4°F 55.2°F
Apr 4 59.1°F 54.1°F 55.4°F
Apr 5 59.1°F 50.4°F 55.5°F
Apr 6 59.5°F 54.3°F 55.9°F
Apr 7 59.5°F 54.1°F 55.8°F
Apr 8 60.1°F 55.8°F 56.4°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 58.5°F 21mi
Matsuyama 55.2°F 43mi
Fukuyama 55.9°F 53mi
Saijō 56.9°F 54mi
Niihama 57.5°F 58mi

* current water temperature in this city

** straight line distance from Hiroshima