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

66.9

°F

May 5, 19:26

Trend:

increasing

Yesterday:

66.7°F

Tomorrow:

67.3°F

Sunrise:

04:47

Sunset:

18:30

Day Length:

13 h. 43 min.

Yokosuka in May

Minimum:

56.1°F

Average:

59.6°F

Maximum:

62.4°F

Sea water temperature in Yokosuka today

As of now, in Yokosuka, the water temperature is 66.9°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 3.2°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 is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 65.9°F on 2024, while the historical minimum was 62.5°F on 2020.

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 maximum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 67.3°F, with minimum temperature starting at 67.2°F, while the maximum might reach 67.6°F.

Daily water temperature in Yokosuka

Date Current Year

actual* / forecast**

last year 10 years average
Apr 21 63.7°F 61.3°F 61.7°F
Apr 22 61.9°F 61.2°F 61.7°F
Apr 23 62.5°F 61.3°F 61.8°F
Apr 24 63.0°F 61.4°F 61.7°F
Apr 25 63.3°F 61.5°F 61.6°F
Apr 26 63.3°F 61.9°F 62.2°F
Apr 27 63.5°F 62.2°F 62.3°F
Apr 28 63.4°F 63.7°F 62.2°F
Apr 29 63.4°F 62.3°F 62.3°F
Apr 30 63.9°F 61.9°F 62.2°F
May 1 64.3°F 61.5°F 62.7°F
May 2 63.8°F 62.0°F 62.9°F
May 3 65.2°F 62.9°F 63.5°F
May 4 66.7°F 63.9°F 63.9°F
May 5 66.9°F 63.0°F 63.7°F
May 6 67.3°F 63.2°F 64.1°F
May 7 67.4°F 63.2°F 64.2°F
May 8 67.3°F 63.9°F 64.1°F
May 9 67.2°F 64.2°F 64.0°F
May 10 67.2°F 64.2°F 64.0°F
May 11 67.6°F 64.6°F 64.4°F
May 12 67.3°F 64.3°F 64.1°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, 61.1°F in Spring, 76.2°F in Summer, and 72.7°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Futtsu 68.5°F 9mi
Yokohama 68.6°F 10mi
Fujisawa 66.8°F 12mi
Kimitsu 69.1°F 12mi
Kisarazu 68.6°F 16mi
Kawasaki 69.6°F 17mi
Tokyo 69.4°F 28mi
Ichihara 69.1°F 28mi
Odawara 66.3°F 29mi
Chiba 69.1°F 33mi

* current water temperature in this city

** straight line distance from Yokosuka