What is the current water temperature in Katsuura?

Q: What is the current water temperature in Katsuura?

As of now, in Katsuura, the water temperature is 17.19°C. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

Japan > Katsuura

Water temperature in Katsuura

Detailed information about the current water temperature in Katsuura. 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.

62.9

°F

February 5, 19:22

Trend:

decreasing

Yesterday:

63.4°F

Tomorrow:

62.6°F

Sunrise:

06:35

Sunset:

17:11

Day Length:

10 h. 36 min.

Katsuura in February

Minimum:

59.5°F

Average:

64.3°F

Maximum:

67.5°F

Sea water temperature in Katsuura today

As of now, in Katsuura, the water temperature is 62.9°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 1.9°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 fall a bit.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 63.9°F on 2017, while the historical minimum was 58.7°F on 2023.

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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 62.8°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Katsuura

Date	Current Year actual* / forecast**	last year	10 years average
Jan 22	63.1°F	60.3°F	62.1°F
Jan 23	63.4°F	61.7°F	62.1°F
Jan 24	62.7°F	61.5°F	61.8°F
Jan 25	62.2°F	61.9°F	61.5°F
Jan 26	62.2°F	61.9°F	61.8°F
Jan 27	62.1°F	62.7°F	61.8°F
Jan 28	61.9°F	64.0°F	62.1°F
Jan 29	62.7°F	62.9°F	62.2°F
Jan 30	62.3°F	59.7°F	61.9°F
Jan 31	62.7°F	60.8°F	61.7°F
Feb 1	62.9°F	60.2°F	61.5°F
Feb 2	63.4°F	60.3°F	61.4°F
Feb 3	63.3°F	59.6°F	61.2°F
Feb 4	63.4°F	62.2°F	61.4°F
Feb 5	62.9°F	62.1°F	61.1°F
Feb 6	62.6°F	60.9°F	60.7°F
Feb 7	62.5°F	61.0°F	60.7°F
Feb 8	62.4°F	58.3°F	60.5°F
Feb 9	62.9°F	57.9°F	61.1°F
Feb 10	62.7°F	57.5°F	60.9°F
Feb 11	63.0°F	60.0°F	61.1°F
Feb 12	63.2°F	58.7°F	61.4°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 Katsuura by month

In Katsuura, the months July through October offer comfortable swimming conditions, which amounts to 118 swimming days.

The warmest water in Katsuura was recorded on September 16, 2024, reaching a 83.3°F. While the coldest temperature occurred on April 16, 2025, dipping to 56.7°F. The average readings by season are 63.3°F in Winter, 62.7°F in Spring, 74.9°F in Summer, and 75.1°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Isumi	62.0°F	8mi
Kisarazu	54.8°F	27mi
Ichihara	51.4°F	29mi
Kimitsu	55.3°F	29mi
Futtsu	57.1°F	30mi
Chiba	50.6°F	33mi
Yokosuka	58.7°F	38mi
Yokohama	53.4°F	42mi
Kawasaki	51.8°F	42mi
Honchō	48.2°F	43mi

* current water temperature in this city

** straight line distance from Katsuura