What is the current water temperature in Katsuura?

As of now, in Katsuura, the water temperature is 24.19°C. It's safe to say that the water is comfortably warm for various water-related activities.

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.

75.5

°F

June 29, 03:49

Trend:

stable

Yesterday:

75.3°F

Tomorrow:

75.3°F

Sunrise:

04:27

Sunset:

18:57

Day Length:

14 h. 30 min.

Katsuura in July

Minimum:

60.6°F

Average:

63.4°F

Maximum:

66.2°F

Sea water temperature in Katsuura today

As of now, in Katsuura, the water temperature is 75.5°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 3.8°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to fall a bit.

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 73.5°F on 2020, while the historical minimum was 69.6°F on 2015.

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 76.1°F, with minimum temperature starting at 75.3°F, while the maximum might reach 77.1°F.

Daily water temperature in Katsuura

Date	Current Year actual* / forecast**	last year	10 years average
Jun 15	71.0°F	69.1°F	69.4°F
Jun 16	71.3°F	69.4°F	69.7°F
Jun 17	72.1°F	70.1°F	69.4°F
Jun 18	70.3°F	69.9°F	69.7°F
Jun 19	70.6°F	70.0°F	69.9°F
Jun 20	72.9°F	69.7°F	70.4°F
Jun 21	74.0°F	69.7°F	70.9°F
Jun 22	74.8°F	66.7°F	70.7°F
Jun 23	74.1°F	67.4°F	71.0°F
Jun 24	73.5°F	70.3°F	71.3°F
Jun 25	73.8°F	69.4°F	71.0°F
Jun 26	75.3°F	70.8°F	71.6°F
Jun 27	74.8°F	71.2°F	71.4°F
Jun 28	75.3°F	71.3°F	71.4°F
Jun 29	75.5°F	71.5°F	71.7°F
Jun 30	75.3°F	67.5°F	71.5°F
Jul 1	75.5°F	68.1°F	71.7°F
Jul 2	75.4°F	68.7°F	71.6°F
Jul 3	76.2°F	69.2°F	72.4°F
Jul 4	76.5°F	70.5°F	72.6°F
Jul 5	76.8°F	74.0°F	73.0°F
Jul 6	77.1°F	74.6°F	73.3°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 112 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, 62.8°F in Spring, 74.6°F in Summer, and 74.9°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Isumi	74.3°F	8mi
Kisarazu	78.4°F	27mi
Ichihara	78.0°F	29mi
Kimitsu	78.3°F	29mi
Futtsu	77.5°F	30mi
Chiba	78.2°F	33mi
Yokosuka	75.8°F	38mi
Yokohama	78.2°F	42mi
Kawasaki	78.7°F	42mi
Honchō	79.8°F	43mi

* current water temperature in this city

** straight line distance from Katsuura