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

86.9

°F

August 5, 06:40

Trend:

increasing

Yesterday:

86.7°F

Tomorrow:

87.2°F

Sunrise:

04:52

Sunset:

18:42

Day Length:

13 h. 50 min.

Tokyo in August

Minimum:

52.4°F

Average:

54.1°F

Maximum:

57.7°F

Sea water temperature in Tokyo today

As of now, in Tokyo, the water temperature is 86.9°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 4.1°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 84.9°F on 2023, while the historical minimum was 79.9°F on 2020.

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 maximum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 86.8°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Tokyo

Date Current Year

actual* / forecast**

last year 10 years average
Jul 22 83.8°F 83.1°F 80.5°F
Jul 23 84.8°F 82.1°F 80.7°F
Jul 24 83.4°F 82.5°F 80.7°F
Jul 25 82.3°F 82.5°F 81.0°F
Jul 26 82.9°F 83.6°F 81.4°F
Jul 27 82.5°F 84.4°F 81.4°F
Jul 28 81.6°F 83.0°F 81.4°F
Jul 29 81.1°F 83.2°F 81.4°F
Jul 30 82.9°F 84.8°F 82.1°F
Jul 31 82.8°F 84.0°F 82.0°F
Aug 1 82.9°F 84.5°F 82.4°F
Aug 2 84.7°F 83.6°F 82.4°F
Aug 3 83.4°F 82.6°F 82.5°F
Aug 4 86.7°F 83.5°F 82.6°F
Aug 5 86.9°F 83.4°F 82.8°F
Aug 6 87.2°F 84.5°F 83.1°F
Aug 7 87.2°F 85.4°F 83.0°F
Aug 8 87.0°F 83.7°F 82.9°F
Aug 9 87.1°F 83.8°F 83.0°F
Aug 10 86.5°F 83.2°F 82.3°F
Aug 11 86.5°F 83.2°F 82.4°F
Aug 12 86.4°F 83.0°F 82.3°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

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, 60.5°F in Spring, 77.8°F in Summer, and 71.8°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Kawasaki 84.4°F 12mi
Matsudo 84.6°F 13mi
Honchō 84.6°F 17mi
Yokohama 82.8°F 18mi
Chiba 83.9°F 25mi
Ichihara 82.8°F 25mi
Kisarazu 78.6°F 25mi
Kimitsu 78.7°F 25mi
Fujisawa 81.2°F 26mi
Futtsu 79.1°F 27mi

* current water temperature in this city

** straight line distance from Tokyo