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 12.9°C. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

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.

55.2

°F

January 3, 16:37

Trend:

increasing

Yesterday:

54.3°F

Tomorrow:

55.5°F

Sunrise:

06:51

Sunset:

16:40

Day Length:

9 h. 49 min.

Tokyo in January

Minimum:

52.2°F

Average:

55.5°F

Maximum:

59.3°F

Sea water temperature in Tokyo today

As of now, in Tokyo, the water temperature is 55.2°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is about the same as 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 rise a bit.

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 also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 58.9°F on 2015, while the historical minimum was 51.6°F on 2023.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 54.8°F, the minimum temperature may reach 54.4°F, and the maximum might stay at 55.5°F.

Daily water temperature in Tokyo

Date	Current Year actual* / forecast**	last year	10 years average
Jan 1	55.5°F	53.5°F	55.5°F
Jan 2	54.3°F	55.0°F	55.3°F
Jan 3	55.2°F	54.1°F	55.1°F
Jan 4	55.5°F	56.5°F	55.3°F
Jan 5	54.8°F	54.4°F	54.6°F
Jan 6	54.9°F	56.3°F	54.7°F
Jan 7	54.8°F	55.1°F	54.7°F
Jan 8	54.6°F	54.1°F	54.5°F
Jan 9	54.4°F	54.8°F	54.2°F
Jan 10	54.5°F	54.3°F	54.3°F
Dec 20	57.5°F	58.6°F	57.8°F
Dec 21	57.1°F	58.4°F	57.3°F
Dec 22	56.9°F	59.0°F	57.6°F
Dec 23	56.8°F	58.4°F	57.5°F
Dec 24	56.0°F	58.2°F	57.2°F
Dec 25	56.1°F	57.8°F	57.0°F
Dec 26	55.7°F	57.4°F	56.8°F
Dec 27	56.2°F	55.8°F	56.8°F
Dec 28	55.9°F	56.0°F	56.3°F
Dec 29	56.1°F	56.1°F	56.0°F
Dec 30	56.4°F	54.2°F	55.7°F
Dec 31	56.0°F	53.9°F	55.5°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 55.1°F in Winter, 60.2°F in Spring, 77.4°F in Summer, and 71.6°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kawasaki	56.2°F	12mi
Matsudo	51.7°F	13mi
Honchō	51.7°F	17mi
Yokohama	57.3°F	18mi
Chiba	54.5°F	25mi
Ichihara	54.9°F	25mi
Kisarazu	57.6°F	25mi
Kimitsu	57.8°F	25mi
Fujisawa	62.8°F	26mi
Futtsu	59.6°F	27mi

* current water temperature in this city

** straight line distance from Tokyo