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

83.9

°F

August 30, 04:19

Trend:

stable

Yesterday:

84.3°F

Tomorrow:

83.9°F

Sunrise:

05:11

Sunset:

18:12

Day Length:

13 h. 1 min.

Tokyo in September

Minimum:

51.7°F

Average:

54.2°F

Maximum:

57.7°F

Sea water temperature in Tokyo today

As of now, in Tokyo, the water temperature is 83.9°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 2.4°F higher 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

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 83.9°F on 2020, while the historical minimum was 78.0°F on 2015.

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 shows a gradual cooling trend. The average temperature is expected to be 83.5°F, the minimum temperature may reach 83.1°F, and the maximum might stay at 83.9°F.

Daily water temperature in Tokyo

Date Current Year

actual* / forecast**

last year 10 years average
Aug 16 83.0°F 85.3°F 82.5°F
Aug 17 82.5°F 85.0°F 82.1°F
Aug 18 83.5°F 84.0°F 81.6°F
Aug 19 84.3°F 85.2°F 82.0°F
Aug 20 83.4°F 84.9°F 82.0°F
Aug 21 85.0°F 84.9°F 82.2°F
Aug 22 83.6°F 84.5°F 82.3°F
Aug 23 83.6°F 84.6°F 82.2°F
Aug 24 85.3°F 84.1°F 82.2°F
Aug 25 84.7°F 85.0°F 82.0°F
Aug 26 85.1°F 84.0°F 82.1°F
Aug 27 85.4°F 83.7°F 82.4°F
Aug 28 84.7°F 83.9°F 82.3°F
Aug 29 84.3°F 82.3°F 81.9°F
Aug 30 83.9°F 82.1°F 81.5°F
Aug 31 83.9°F 82.0°F 81.5°F
Sep 1 83.6°F 81.6°F 81.2°F
Sep 2 83.8°F 83.0°F 81.3°F
Sep 3 83.7°F 82.5°F 81.3°F
Sep 4 83.1°F 82.0°F 80.7°F
Sep 5 83.2°F 81.4°F 80.8°F
Sep 6 83.3°F 82.1°F 80.9°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 104 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 71.6°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Kawasaki 83.2°F 12mi
Matsudo 85.1°F 13mi
Honchō 85.1°F 17mi
Yokohama 82.4°F 18mi
Chiba 87.3°F 25mi
Ichihara 87.1°F 25mi
Kisarazu 83.0°F 25mi
Kimitsu 82.4°F 25mi
Fujisawa 81.4°F 26mi
Futtsu 81.4°F 27mi

* current water temperature in this city

** straight line distance from Tokyo