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

67.5

°F

May 3, 11:49

Trend:

increasing

Yesterday:

66.7°F

Tomorrow:

67.9°F

Sunrise:

04:47

Sunset:

18:30

Day Length:

13 h. 43 min.

Tokyo in May

Minimum:

50.8°F

Average:

54.9°F

Maximum:

59.4°F

Sea water temperature in Tokyo today

As of now, in Tokyo, the water temperature is 67.5°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 3.6°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 66.0°F on 2023, while the historical minimum was 62.0°F on 2017.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 68.3°F, with minimum temperature starting at 67.8°F, while the maximum might reach 68.7°F.

Daily water temperature in Tokyo

Date Current Year

actual* / forecast**

last year 10 years average
Apr 19 62.6°F 60.2°F 60.0°F
Apr 20 64.9°F 60.3°F 60.4°F
Apr 21 64.5°F 63.8°F 60.9°F
Apr 22 64.3°F 63.5°F 61.2°F
Apr 23 64.0°F 63.8°F 61.3°F
Apr 24 63.6°F 63.7°F 61.3°F
Apr 25 63.3°F 63.5°F 61.5°F
Apr 26 64.0°F 63.4°F 62.0°F
Apr 27 64.0°F 63.4°F 62.1°F
Apr 28 63.9°F 63.4°F 62.2°F
Apr 29 63.9°F 63.6°F 62.5°F
Apr 30 64.0°F 63.8°F 62.6°F
May 1 67.9°F 63.8°F 63.1°F
May 2 66.7°F 62.6°F 63.1°F
May 3 67.5°F 66.0°F 63.9°F
May 4 67.9°F 67.4°F 64.4°F
May 5 67.8°F 66.1°F 64.3°F
May 6 68.3°F 66.6°F 64.7°F
May 7 68.5°F 66.6°F 64.9°F
May 8 68.2°F 66.6°F 64.6°F
May 9 68.7°F 69.8°F 65.1°F
May 10 68.6°F 68.1°F 65.0°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 102 swimming days.
The warmest water in Tokyo was recorded on August 24, 2023, reaching a 86.0°F. While the coldest temperature occurred on February 15, 2022, dipping to 47.3°F. The average readings by season are 55.3°F in Winter, 60.2°F in Spring, 77.0°F in Summer, and 71.3°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Kawasaki 66.7°F 12mi
Matsudo 65.9°F 13mi
Honchō 65.9°F 17mi
Yokohama 66.3°F 18mi
Chiba 65.1°F 25mi
Ichihara 64.9°F 25mi
Kisarazu 62.8°F 25mi
Kimitsu 62.7°F 25mi
Fujisawa 65.7°F 26mi
Futtsu 62.3°F 27mi

* current water temperature in this city

** straight line distance from Tokyo