What is the current water temperature in Shimonoseki?

Q: What is the current water temperature in Shimonoseki?

As of now, in Shimonoseki, the water temperature is 14.48°C. 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.

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Water temperature in Shimonoseki

Detailed information about the current water temperature in Shimonoseki. 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.

58.1

°F

April 19, 10:37

Trend:

stable

Yesterday:

58.2°F

Tomorrow:

58.4°F

Sunrise:

05:42

Sunset:

18:50

Day Length:

13 h. 8 min.

Shimonoseki in April

Minimum:

56.1°F

Average:

58.0°F

Maximum:

59.9°F

Sea water temperature in Shimonoseki today

As of now, in Shimonoseki, the water temperature is 58.1°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 0.8°F lower 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 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 60.1°F on 2023, while the historical minimum was 56.9°F on 2020.

latest data

last year

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 minimum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 59.1°F, with minimum temperature starting at 58.4°F, while the maximum might reach 59.6°F.

Daily water temperature in Shimonoseki

Date	Current Year actual* / forecast**	last year	10 years average
Apr 5	54.2°F	57.3°F	57.0°F
Apr 6	54.9°F	56.5°F	57.1°F
Apr 7	55.2°F	56.5°F	57.2°F
Apr 8	55.8°F	57.2°F	57.3°F
Apr 9	57.1°F	57.3°F	57.5°F
Apr 10	57.3°F	58.6°F	57.9°F
Apr 11	57.2°F	57.6°F	57.8°F
Apr 12	57.5°F	57.7°F	57.8°F
Apr 13	58.7°F	57.7°F	58.1°F
Apr 14	58.0°F	59.9°F	58.2°F
Apr 15	57.2°F	59.8°F	58.1°F
Apr 16	57.0°F	59.5°F	58.3°F
Apr 17	57.6°F	59.4°F	58.7°F
Apr 18	58.2°F	59.5°F	59.0°F
Apr 19	58.1°F	60.0°F	58.9°F
Apr 20	58.4°F	60.0°F	59.2°F
Apr 21	58.6°F	59.9°F	59.4°F
Apr 22	59.0°F	59.9°F	59.8°F
Apr 23	59.3°F	59.8°F	60.1°F
Apr 24	59.5°F	61.0°F	60.3°F
Apr 25	59.6°F	61.4°F	60.4°F
Apr 26	59.6°F	59.8°F	60.4°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 Shimonoseki by month

In Shimonoseki, the months July through September offer comfortable swimming conditions, which amounts to 112 swimming days.

The warmest water in Shimonoseki was recorded on August 8, 2024, reaching a 86.8°F. While the coldest temperature occurred on March 10, 2025, dipping to 48.5°F. The average readings by season are 57.4°F in Winter, 59.3°F in Spring, 77.4°F in Summer, and 73.1°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kitakyushu	58.5°F	9mi
Fukuoka	58.1°F	39mi
Beppu	57.5°F	57mi
Ōita	58.3°F	63mi

* current water temperature in this city

** straight line distance from Shimonoseki