What is the current water temperature in Tokyo?

Q: What is the current water temperature in Tokyo?

As of now, in Tokyo, the water temperature is 22.53°C. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool.

Japan > Tokyo

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.

72.6

°F

June 30, 21:14

Trend:

stable

Yesterday:

73.1°F

Tomorrow:

73.1°F

Sunrise:

04:28

Sunset:

19:01

Day Length:

14 h. 33 min.

Tokyo in July

Minimum:

52.6°F

Average:

54.2°F

Maximum:

58.0°F

Sea water temperature in Tokyo today

As of now, in Tokyo, the water temperature is 72.6°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 2.8°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 rise a bit.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 79.7°F on 2025, while the historical minimum was 72.0°F on 2016.

latest data

last year

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 suggests a gradual increase. The average temperature is expected to rise up to 73.9°F, with minimum temperature starting at 73.1°F, while the maximum might reach 74.5°F.

Daily water temperature in Tokyo

Date	Current Year actual* / forecast**	last year	10 years average
Jun 16	69.9°F	73.2°F	72.1°F
Jun 17	70.3°F	75.4°F	72.4°F
Jun 18	69.2°F	77.5°F	72.7°F
Jun 19	72.0°F	79.3°F	73.0°F
Jun 20	72.0°F	79.1°F	73.0°F
Jun 21	72.7°F	78.5°F	73.2°F
Jun 22	72.8°F	77.2°F	72.8°F
Jun 23	72.7°F	77.0°F	72.9°F
Jun 24	72.6°F	77.0°F	73.1°F
Jun 25	73.1°F	76.4°F	73.1°F
Jun 26	72.3°F	79.1°F	74.0°F
Jun 27	71.9°F	79.2°F	74.1°F
Jun 28	72.9°F	79.0°F	74.8°F
Jun 29	73.1°F	79.6°F	75.0°F
Jun 30	72.6°F	79.7°F	75.4°F
Jul 1	73.1°F	81.0°F	76.0°F
Jul 2	73.5°F	79.8°F	76.4°F
Jul 3	73.3°F	77.1°F	76.2°F
Jul 4	73.9°F	77.3°F	76.8°F
Jul 5	74.4°F	80.1°F	77.3°F
Jul 6	74.5°F	80.0°F	77.3°F
Jul 7	74.5°F	82.1°F	77.4°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, 60.5°F in Spring, 77.8°F in Summer, and 71.8°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kawasaki	72.7°F	12mi
Matsudo	73.6°F	13mi
Honchō	73.6°F	17mi
Yokohama	72.9°F	18mi
Chiba	73.4°F	25mi
Ichihara	73.2°F	25mi
Kisarazu	73.0°F	25mi
Kimitsu	72.8°F	25mi
Fujisawa	73.3°F	26mi
Futtsu	72.8°F	27mi

* current water temperature in this city

** straight line distance from Tokyo