All data are in degrees Fahrenheit

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Water temperature in Sendai

Detailed information about the current water temperature in Sendai. 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 Sendai now

68.5

°F

October 16, 16:55

Trend:

decreasing

Yesterday:

69.3°F

Tomorrow:

68.3°F

Sunrise:

05:46

Sunset:

16:58

Day Length:

11 h. 12 min.

Sendai in October

Minimum:

47.6°F

Average:

50.4°F

Maximum:

53.5°F

Sea water temperature in Sendai today

As of now, in Sendai, the water temperature is 68.5°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 about the same as 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 fall 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 71.4°F on 2024, while the historical minimum was 66.7°F on 2017.

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 histoorical minimum and others when it was close to the historical maximum. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 67.5°F, the minimum temperature may reach 66.6°F, and the maximum might stay at 68.3°F.

Daily water temperature in Sendai

Date Current Year

actual* / forecast**

last year 10 years average
Oct 2 71.1°F 73.7°F 71.8°F
Oct 3 70.9°F 73.3°F 71.7°F
Oct 4 71.0°F 73.9°F 71.6°F
Oct 5 70.3°F 75.3°F 71.5°F
Oct 6 70.0°F 74.6°F 71.0°F
Oct 7 70.3°F 73.9°F 70.6°F
Oct 8 69.6°F 73.2°F 70.4°F
Oct 9 69.2°F 73.4°F 70.2°F
Oct 10 69.5°F 72.2°F 69.9°F
Oct 11 69.6°F 71.8°F 69.8°F
Oct 12 70.2°F 71.3°F 69.6°F
Oct 13 69.9°F 70.9°F 69.3°F
Oct 14 70.0°F 70.8°F 68.9°F
Oct 15 69.3°F 70.5°F 68.9°F
Oct 16 68.5°F 70.5°F 68.6°F
Oct 17 68.3°F 69.8°F 68.4°F
Oct 18 68.1°F 69.8°F 68.2°F
Oct 19 67.7°F 70.0°F 67.9°F
Oct 20 67.4°F 68.7°F 67.5°F
Oct 21 67.3°F 68.4°F 67.4°F
Oct 22 66.9°F 67.8°F 67.1°F
Oct 23 66.6°F 67.4°F 66.8°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 Sendai by month

In Sendai, the months July through September offer comfortable swimming conditions, which amounts to 74 swimming days.
The warmest water in Sendai was recorded on August 6, 2023, reaching a 84.7°F. While the coldest temperature occurred on February 23, 2018, dipping to 42.6°F. The average readings by season are 51.0°F in Winter, 52.1°F in Spring, 73.2°F in Summer, and 68.5°F in Autumn.