What is the current water temperature in Ichihara?

Q: What is the current water temperature in Ichihara?

As of now, in Ichihara, the water temperature is 12.46°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 > Ichihara

Water temperature in Ichihara

Detailed information about the current water temperature in Ichihara. 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.

54.4

°F

March 18, 19:22

Trend:

stable

Yesterday:

56.8°F

Tomorrow:

54.6°F

Sunrise:

05:47

Sunset:

17:49

Day Length:

12 h. 2 min.

Ichihara in March

Minimum:

52.0°F

Average:

55.0°F

Maximum:

59.1°F

Sea water temperature in Ichihara today

As of now, in Ichihara, the water temperature is 54.4°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 0.6°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 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 falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 59.1°F on 2025, while the historical minimum was 52.3°F on 2022.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 54.9°F, with minimum temperature starting at 54.5°F, while the maximum might reach 55.5°F.

Daily water temperature in Ichihara

Date	Current Year actual* / forecast**	last year	10 years average
Mar 4	55.4°F	54.4°F	53.5°F
Mar 5	55.1°F	54.8°F	54.0°F
Mar 6	53.5°F	55.2°F	53.8°F
Mar 7	55.6°F	52.7°F	54.0°F
Mar 8	55.7°F	53.1°F	53.9°F
Mar 9	55.5°F	53.6°F	54.0°F
Mar 10	55.1°F	53.9°F	53.9°F
Mar 11	54.9°F	54.2°F	53.9°F
Mar 12	55.0°F	54.5°F	53.9°F
Mar 13	56.3°F	54.8°F	54.3°F
Mar 14	54.4°F	55.1°F	54.5°F
Mar 15	57.8°F	55.1°F	54.8°F
Mar 16	57.1°F	55.3°F	54.6°F
Mar 17	56.8°F	59.6°F	55.1°F
Mar 18	54.4°F	59.1°F	55.1°F
Mar 19	54.6°F	58.7°F	55.3°F
Mar 20	54.5°F	58.4°F	55.1°F
Mar 21	54.5°F	58.0°F	55.1°F
Mar 22	55.0°F	57.7°F	55.6°F
Mar 23	54.9°F	55.5°F	55.5°F
Mar 24	55.3°F	55.4°F	56.0°F
Mar 25	55.5°F	57.1°F	56.1°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 Ichihara by month

In Ichihara, the months July through September offer comfortable swimming conditions, which amounts to 108 swimming days.

The warmest water in Ichihara was recorded on July 30, 2024, reaching a 88.3°F. While the coldest temperature occurred on February 2, 2019, dipping to 47.9°F. The average readings by season are 54.9°F in Winter, 60.3°F in Spring, 78.1°F in Summer, and 72.1°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Chiba	54.2°F	6mi
Kisarazu	55.7°F	12mi
Honchō	52.1°F	14mi
Kimitsu	55.8°F	17mi
Futtsu	56.1°F	21mi
Kawasaki	55.2°F	21mi
Matsudo	52.1°F	21mi
Tokyo	54.0°F	25mi
Yokohama	56.1°F	25mi
Isumi	57.4°F	27mi

* current water temperature in this city

** straight line distance from Ichihara