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 21.19°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.

70.1

°F

May 19, 17:18

Trend:

decreasing

Yesterday:

70.2°F

Tomorrow:

70.1°F

Sunrise:

04:34

Sunset:

18:42

Day Length:

14 h. 8 min.

Tokyo in May

Minimum:

50.8°F

Average:

54.1°F

Maximum:

59.4°F

Sea water temperature in Tokyo today

As of now, in Tokyo, the water temperature is 70.1°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 2.6°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 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 70.1°F on 2018, while the historical minimum was 65.1°F on 2017.

latest data

last year

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 suggests a gradual increase. The average temperature is expected to rise up to 70.7°F, with minimum temperature starting at 70.1°F, while the maximum might reach 71.3°F.

Daily water temperature in Tokyo

Date	Current Year actual* / forecast**	last year	10 years average
May 5	69.4°F	64.8°F	65.2°F
May 6	67.7°F	64.7°F	65.3°F
May 7	68.1°F	65.1°F	65.5°F
May 8	68.6°F	65.3°F	65.2°F
May 9	67.9°F	65.4°F	65.6°F
May 10	70.1°F	65.5°F	65.8°F
May 11	69.1°F	64.9°F	65.1°F
May 12	66.8°F	65.4°F	65.7°F
May 13	68.0°F	65.0°F	65.6°F
May 14	69.1°F	65.9°F	65.7°F
May 15	69.1°F	67.9°F	66.2°F
May 16	68.5°F	67.6°F	66.2°F
May 17	68.6°F	67.2°F	66.6°F
May 18	70.2°F	69.2°F	67.5°F
May 19	70.1°F	69.0°F	67.6°F
May 20	70.1°F	68.1°F	67.6°F
May 21	70.3°F	67.8°F	67.7°F
May 22	70.5°F	67.7°F	68.0°F
May 23	70.7°F	67.7°F	68.2°F
May 24	71.0°F	67.8°F	68.4°F
May 25	71.3°F	67.8°F	68.8°F
May 26	71.2°F	67.8°F	68.7°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, 60.4°F in Spring, 77.9°F in Summer, and 71.8°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kawasaki	70.1°F	12mi
Matsudo	70.5°F	13mi
Honchō	70.5°F	17mi
Yokohama	70.1°F	18mi
Chiba	71.1°F	25mi
Ichihara	70.9°F	25mi
Kisarazu	69.0°F	25mi
Kimitsu	68.5°F	25mi
Fujisawa	69.1°F	26mi
Futtsu	67.6°F	27mi

* current water temperature in this city

** straight line distance from Tokyo