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

52.0

°F

January 21, 10:35

Trend:

stable

Yesterday:

51.9°F

Tomorrow:

51.5°F

Sunrise:

06:49

Sunset:

16:57

Day Length:

10 h. 8 min.

Tokyo in January

Minimum:

52.2°F

Average:

55.1°F

Maximum:

59.3°F

Sea water temperature in Tokyo today

As of now, in Tokyo, the water temperature is 52.0°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 1.3°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 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 56.2°F on 2016, while the historical minimum was 49.8°F on 2019.

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 51.2°F, the minimum temperature may reach 50.8°F, and the maximum might stay at 51.6°F.

Daily water temperature in Tokyo

Date Current Year

actual* / forecast**

last year 10 years average
Jan 7 52.6°F 53.7°F 54.2°F
Jan 8 53.9°F 53.6°F 54.1°F
Jan 9 53.4°F 53.9°F 53.9°F
Jan 10 54.2°F 53.0°F 54.0°F
Jan 11 53.9°F 52.4°F 53.7°F
Jan 12 53.0°F 52.5°F 53.5°F
Jan 13 53.9°F 53.5°F 53.6°F
Jan 14 51.2°F 53.4°F 53.6°F
Jan 15 52.3°F 53.2°F 53.4°F
Jan 16 51.7°F 52.5°F 53.5°F
Jan 17 51.0°F 53.0°F 53.6°F
Jan 18 51.2°F 52.4°F 53.6°F
Jan 19 50.5°F 52.0°F 53.4°F
Jan 20 51.9°F 51.6°F 53.2°F
Jan 21 52.0°F 52.8°F 53.3°F
Jan 22 51.5°F 50.2°F 52.8°F
Jan 23 51.6°F 49.1°F 52.9°F
Jan 24 51.5°F 48.7°F 52.8°F
Jan 25 50.8°F 49.4°F 52.1°F
Jan 26 50.9°F 52.0°F 52.2°F
Jan 27 50.9°F 51.4°F 52.2°F
Jan 28 51.1°F 52.3°F 52.4°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 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 52.4°F 12mi
Matsudo 50.2°F 13mi
Honchō 50.2°F 17mi
Yokohama 52.7°F 18mi
Chiba 50.5°F 25mi
Ichihara 50.6°F 25mi
Kisarazu 52.1°F 25mi
Kimitsu 52.1°F 25mi
Fujisawa 58.8°F 26mi
Futtsu 53.2°F 27mi

* current water temperature in this city

** straight line distance from Tokyo