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

53.0

°F

March 21, 22:09

Trend:

stable

Yesterday:

54.4°F

Tomorrow:

53.3°F

Sunrise:

05:45

Sunset:

17:53

Day Length:

12 h. 8 min.

Tokyo in March

Minimum:

51.6°F

Average:

54.5°F

Maximum:

58.9°F

Sea water temperature in Tokyo today

As of now, in Tokyo, the water temperature is 53.0°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 2.5°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 slightly 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 57.6°F on 2023, while the historical minimum was 53.8°F on 2024.

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 histoorical minimum and others when it was close to the historical maximum. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 53.7°F, with minimum temperature starting at 53.3°F, while the maximum might reach 54.2°F.

Daily water temperature in Tokyo

Date Current Year

actual* / forecast**

last year 10 years average
Mar 7 55.3°F 51.9°F 53.6°F
Mar 8 54.9°F 52.1°F 53.5°F
Mar 9 53.6°F 52.5°F 53.5°F
Mar 10 53.4°F 52.9°F 53.5°F
Mar 11 51.8°F 53.2°F 53.4°F
Mar 12 52.3°F 53.5°F 53.3°F
Mar 13 52.3°F 53.8°F 53.9°F
Mar 14 55.7°F 54.2°F 54.2°F
Mar 15 52.9°F 51.6°F 53.5°F
Mar 16 53.6°F 52.2°F 53.9°F
Mar 17 54.1°F 53.6°F 54.8°F
Mar 18 54.0°F 54.4°F 54.9°F
Mar 19 54.7°F 55.4°F 55.0°F
Mar 20 54.4°F 55.8°F 55.0°F
Mar 21 53.0°F 55.9°F 55.5°F
Mar 22 53.3°F 55.1°F 55.9°F
Mar 23 53.4°F 54.6°F 55.9°F
Mar 24 53.8°F 56.3°F 56.3°F
Mar 25 53.8°F 56.3°F 56.3°F
Mar 26 53.9°F 56.0°F 56.4°F
Mar 27 53.8°F 59.1°F 56.4°F
Mar 28 54.2°F 58.9°F 56.7°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, 60.3°F in Spring, 77.9°F in Summer, and 71.8°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Kawasaki 54.2°F 12mi
Matsudo 52.2°F 13mi
Honchō 52.2°F 17mi
Yokohama 56.0°F 18mi
Chiba 55.0°F 25mi
Ichihara 55.6°F 25mi
Kisarazu 57.2°F 25mi
Kimitsu 57.1°F 25mi
Fujisawa 59.1°F 26mi
Futtsu 57.6°F 27mi

* current water temperature in this city

** straight line distance from Tokyo