All data are in degrees Fahrenheit

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Water temperature in Tokyo

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

70.7

°F

June 9, 19:14

Trend:

stable

Yesterday:

71.3°F

Tomorrow:

70.8°F

Sunrise:

04:25

Sunset:

18:56

Day Length:

14 h. 31 min.

Tokyo in June

Minimum:

51.4°F

Average:

54.2°F

Maximum:

59.1°F

Sea water temperature in Tokyo today

As of now, in Tokyo, the water temperature is 70.7°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 0.2°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 stay about the same.

Recent sea temperature and forecast

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling 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 73.2°F on 2020, while the historical minimum was 69.1°F on 2016.

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 71.1°F, with minimum temperature starting at 70.8°F, while the maximum might reach 72.0°F.

Daily water temperature in Tokyo

Date Current Year

actual* / forecast**

last year 10 years average
May 26 67.8°F 67.8°F 68.6°F
May 27 68.6°F 66.8°F 68.6°F
May 28 72.4°F 69.2°F 69.3°F
May 29 72.0°F 69.4°F 69.8°F
May 30 71.2°F 69.3°F 69.8°F
May 31 70.8°F 69.4°F 69.8°F
Jun 1 71.9°F 69.2°F 69.8°F
Jun 2 71.8°F 69.5°F 69.7°F
Jun 3 71.7°F 69.5°F 70.1°F
Jun 4 71.5°F 69.5°F 70.1°F
Jun 5 71.3°F 70.8°F 70.4°F
Jun 6 70.8°F 70.4°F 70.6°F
Jun 7 71.0°F 70.6°F 70.7°F
Jun 8 71.3°F 70.7°F 70.9°F
Jun 9 70.7°F 70.6°F 70.9°F
Jun 10 70.8°F 70.4°F 71.0°F
Jun 11 70.8°F 70.2°F 71.1°F
Jun 12 71.2°F 70.1°F 71.4°F
Jun 13 71.0°F 70.5°F 71.3°F
Jun 14 70.9°F 70.4°F 71.1°F
Jun 15 71.1°F 70.5°F 71.3°F
Jun 16 72.0°F 73.2°F 72.2°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 Tokyo by month

In Tokyo, the months July through September offer comfortable swimming conditions, which amounts to 105 swimming days.
The warmest water in Tokyo was recorded on July 30, 2024, reaching a 88.2°F. While the coldest temperature occurred on February 15, 2022, dipping to 47.3°F. The average readings by season are 54.7°F in Winter, 60.5°F in Spring, 77.9°F in Summer, and 71.8°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Kawasaki 70.4°F 12mi
Matsudo 70.9°F 13mi
Honchō 70.9°F 17mi
Yokohama 69.7°F 18mi
Chiba 70.6°F 25mi
Ichihara 70.6°F 25mi
Kisarazu 69.9°F 25mi
Kimitsu 69.8°F 25mi
Fujisawa 69.8°F 26mi
Futtsu 69.4°F 27mi

* current water temperature in this city

** straight line distance from Tokyo