All data are in degrees Fahrenheit

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Water temperature in Yokosuka

Detailed information about the current water temperature in Yokosuka. 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 Yokosuka now

75.2

°F

September 26, 02:58

Trend:

stable

Yesterday:

75.1°F

Tomorrow:

74.7°F

Sunrise:

05:32

Sunset:

17:34

Day Length:

12 h. 2 min.

Yokosuka in October

Minimum:

57.0°F

Average:

59.0°F

Maximum:

61.1°F

Sea water temperature in Yokosuka today

As of now, in Yokosuka, the water temperature is 75.2°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.1°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 fall a bit.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 78.0°F on 2024, while the historical minimum was 74.9°F on 2021.

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 shows a gradual cooling trend. The average temperature is expected to be 74.4°F, the minimum temperature may reach 73.3°F, and the maximum might stay at 74.8°F.

Daily water temperature in Yokosuka

Date Current Year

actual* / forecast**

last year 10 years average
Sep 12 77.6°F 80.3°F 79.1°F
Sep 13 77.6°F 79.9°F 79.0°F
Sep 14 79.2°F 79.9°F 79.1°F
Sep 15 78.9°F 80.3°F 79.2°F
Sep 16 78.4°F 78.9°F 78.9°F
Sep 17 79.3°F 80.9°F 78.8°F
Sep 18 76.0°F 81.1°F 78.6°F
Sep 19 76.5°F 80.7°F 78.3°F
Sep 20 76.2°F 80.3°F 77.9°F
Sep 21 76.1°F 80.3°F 77.6°F
Sep 22 76.2°F 79.5°F 77.1°F
Sep 23 75.8°F 76.1°F 76.7°F
Sep 24 75.2°F 76.2°F 76.7°F
Sep 25 75.1°F 75.3°F 76.2°F
Sep 26 75.2°F 75.7°F 76.3°F
Sep 27 74.7°F 76.6°F 75.8°F
Sep 28 74.6°F 75.2°F 75.7°F
Sep 29 74.7°F 76.3°F 75.8°F
Sep 30 74.8°F 77.0°F 75.8°F
Oct 1 74.3°F 75.5°F 75.4°F
Oct 2 74.1°F 74.8°F 75.2°F
Oct 3 73.3°F 74.3°F 74.4°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 Yokosuka by month

In Yokosuka, the months July through September offer comfortable swimming conditions, which amounts to 104 swimming days.
The warmest water in Yokosuka was recorded on August 13, 2023, reaching a 84.7°F. While the coldest temperature occurred on March 2, 2026, dipping to 51.8°F. The average readings by season are 59.7°F in Winter, 61.2°F in Spring, 76.2°F in Summer, and 72.7°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Futtsu 74.8°F 9mi
Yokohama 75.5°F 10mi
Fujisawa 76.4°F 12mi
Kimitsu 74.8°F 12mi
Kisarazu 74.6°F 16mi
Kawasaki 74.9°F 17mi
Tokyo 74.3°F 28mi
Ichihara 75.1°F 28mi
Odawara 76.6°F 29mi
Chiba 74.5°F 33mi

* current water temperature in this city

** straight line distance from Yokosuka