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 17.56°C. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

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.

63.6

°F

November 11, 22:07

Trend:

stable

Yesterday:

66.1°F

Tomorrow:

63.6°F

Sunrise:

06:12

Sunset:

16:38

Day Length:

10 h. 26 min.

Tokyo in November

Minimum:

51.7°F

Average:

53.7°F

Maximum:

57.7°F

Sea water temperature in Tokyo today

As of now, in Tokyo, the water temperature is 63.6°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 1.6°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

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 68.5°F on 2023, while the historical minimum was 62.9°F on 2025.

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 maximum recorded over the past years. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 63.1°F, the minimum temperature may reach 62.3°F, and the maximum might stay at 63.6°F.

Daily water temperature in Tokyo

Date	Current Year actual* / forecast**	last year	10 years average
Oct 28	72.3°F	70.6°F	69.1°F
Oct 29	71.7°F	70.4°F	69.2°F
Oct 30	71.5°F	70.6°F	68.8°F
Oct 31	69.4°F	70.8°F	68.5°F
Nov 1	69.2°F	68.9°F	67.9°F
Nov 2	68.5°F	66.3°F	67.5°F
Nov 3	68.1°F	66.6°F	67.2°F
Nov 4	67.8°F	65.6°F	66.9°F
Nov 5	67.5°F	65.6°F	66.6°F
Nov 6	66.6°F	65.6°F	66.5°F
Nov 7	67.2°F	65.3°F	66.5°F
Nov 8	66.2°F	62.4°F	66.0°F
Nov 9	65.9°F	62.7°F	65.7°F
Nov 10	66.1°F	63.0°F	65.7°F
Nov 11	63.6°F	62.9°F	65.2°F
Nov 12	63.6°F	63.2°F	65.2°F
Nov 13	63.3°F	63.2°F	64.9°F
Nov 14	63.3°F	63.4°F	64.9°F
Nov 15	63.3°F	63.5°F	64.9°F
Nov 16	62.9°F	61.7°F	64.5°F
Nov 17	62.8°F	62.5°F	64.4°F
Nov 18	62.3°F	61.3°F	63.9°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 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	64.5°F	12mi
Matsudo	65.4°F	13mi
Honchō	65.4°F	17mi
Yokohama	65.8°F	18mi
Chiba	66.2°F	25mi
Ichihara	66.3°F	25mi
Kisarazu	67.9°F	25mi
Kimitsu	67.7°F	25mi
Fujisawa	70.6°F	26mi
Futtsu	67.5°F	27mi

* current water temperature in this city

** straight line distance from Tokyo