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

72.8

°F

October 19, 18:45

Trend:

stable

Yesterday:

70.4°F

Tomorrow:

72.4°F

Sunrise:

05:51

Sunset:

17:02

Day Length:

11 h. 11 min.

Tokyo in October

Minimum:

51.7°F

Average:

54.2°F

Maximum:

57.8°F

Sea water temperature in Tokyo today

As of now, in Tokyo, the water temperature is 72.8°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 2.4°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable increase in temperature. This indicates a warming trend over the past day. 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 is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 74.2°F on 2024, while the historical minimum was 68.0°F on 2020.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 71.5°F, the minimum temperature may reach 70.9°F, and the maximum might stay at 72.4°F.

Daily water temperature in Tokyo

Date Current Year

actual* / forecast**

last year 10 years average
Oct 5 76.1°F 75.6°F 74.6°F
Oct 6 75.8°F 75.1°F 74.3°F
Oct 7 74.2°F 75.8°F 73.7°F
Oct 8 73.9°F 75.5°F 73.4°F
Oct 9 73.7°F 75.2°F 73.0°F
Oct 10 73.2°F 74.9°F 72.8°F
Oct 11 73.0°F 72.0°F 72.4°F
Oct 12 72.7°F 72.0°F 72.1°F
Oct 13 72.2°F 71.1°F 71.8°F
Oct 14 72.4°F 71.7°F 71.5°F
Oct 15 72.1°F 71.5°F 71.4°F
Oct 16 71.8°F 72.3°F 71.3°F
Oct 17 70.6°F 72.6°F 71.2°F
Oct 18 70.4°F 72.1°F 70.4°F
Oct 19 72.8°F 74.2°F 70.4°F
Oct 20 72.4°F 72.4°F 69.9°F
Oct 21 71.9°F 71.7°F 69.5°F
Oct 22 71.8°F 70.8°F 69.4°F
Oct 23 71.3°F 71.3°F 68.9°F
Oct 24 71.3°F 72.4°F 68.8°F
Oct 25 71.2°F 72.1°F 68.8°F
Oct 26 70.9°F 71.8°F 68.4°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 55.0°F in Winter, 60.2°F in Spring, 77.6°F in Summer, and 71.7°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Kawasaki 72.9°F 12mi
Matsudo 70.1°F 13mi
Honchō 70.1°F 17mi
Yokohama 73.7°F 18mi
Chiba 70.5°F 25mi
Ichihara 70.6°F 25mi
Kisarazu 71.3°F 25mi
Kimitsu 71.7°F 25mi
Fujisawa 75.4°F 26mi
Futtsu 72.2°F 27mi

* current water temperature in this city

** straight line distance from Tokyo