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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

54.2

°F

March 18, 16:37

Trend:

stable

Yesterday:

54.1°F

Tomorrow:

54.2°F

Sunrise:

05:49

Sunset:

17:51

Day Length:

12 h. 2 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 54.2°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 0.8°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

The water temperature today is above average for the last two weeks, showing a small increase in temperature. 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 58.1°F on 2023, while the historical minimum was 53.2°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 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 54.9°F, with minimum temperature starting at 54.2°F, while the maximum might reach 55.6°F.

Daily water temperature in Tokyo

Date Current Year

actual* / forecast**

 last year 10 years average
Mar 4 56.9°F 53.5°F 53.1°F
Mar 5 55.1°F 54.1°F 53.4°F
Mar 6 52.5°F 54.5°F 53.3°F
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 54.9°F
Mar 18 54.2°F 54.4°F 55.0°F
Mar 19 54.2°F 55.4°F 55.0°F
Mar 20 54.3°F 55.8°F 55.0°F
Mar 21 54.7°F 55.9°F 55.5°F
Mar 22 55.1°F 55.1°F 55.9°F
Mar 23 55.1°F 54.6°F 55.9°F
Mar 24 55.6°F 56.3°F 56.3°F
Mar 25 55.5°F 56.3°F 56.3°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

January

February

March

April

May

June

July

August

September

October

November

December

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 55.4°F 12mi
Matsudo 52.2°F 13mi
Honchō 52.2°F 17mi
Yokohama 56.6°F 18mi
Chiba 56.3°F 25mi
Ichihara 56.9°F 25mi
Kisarazu 56.0°F 25mi
Kimitsu 56.1°F 25mi
Fujisawa 58.6°F 26mi
Futtsu 56.2°F 27mi

* current water temperature in this city

** straight line distance from Tokyo