What is the current water temperature in Katsuura?

As of now, in Katsuura, the water temperature is 27.17°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.

80.9

°F

August 8, 14:50

Trend:

stable

Yesterday:

80.9°F

Tomorrow:

80.7°F

Sunrise:

04:52

Sunset:

18:36

Day Length:

13 h. 44 min.

Katsuura in August

Minimum:

61.7°F

Average:

63.8°F

Maximum:

66.0°F

Sea water temperature in Katsuura today

As of now, in Katsuura, the water temperature is 80.9°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.1°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

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming 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 82.1°F on 2017, while the historical minimum was 77.5°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 histoorical minimum and others when it was close to the historical maximum. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 80.6°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
Jul 25	80.5°F	80.9°F	77.4°F
Jul 26	80.1°F	78.3°F	77.2°F
Jul 27	77.0°F	77.2°F	77.2°F
Jul 28	78.7°F	79.0°F	77.3°F
Jul 29	80.5°F	80.0°F	77.5°F
Jul 30	80.2°F	80.2°F	77.6°F
Jul 31	80.2°F	81.2°F	77.7°F
Aug 1	78.5°F	82.1°F	77.7°F
Aug 2	80.8°F	82.1°F	78.2°F
Aug 3	79.4°F	81.0°F	78.0°F
Aug 4	78.3°F	82.0°F	78.5°F
Aug 5	77.9°F	81.3°F	78.8°F
Aug 6	75.3°F	81.8°F	79.0°F
Aug 7	80.9°F	81.0°F	79.8°F
Aug 8	80.9°F	80.9°F	79.8°F
Aug 9	80.7°F	80.7°F	79.6°F
Aug 10	80.4°F	80.4°F	79.4°F
Aug 11	80.1°F	80.1°F	79.0°F
Aug 12	80.4°F	79.8°F	79.3°F
Aug 13	80.9°F	80.0°F	79.8°F
Aug 14	81.1°F	80.1°F	80.1°F
Aug 15	80.6°F	76.8°F	79.5°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, 62.8°F in Spring, 75.0°F in Summer, and 75.1°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Isumi	78.7°F	8mi
Kisarazu	79.2°F	27mi
Ichihara	79.7°F	29mi
Kimitsu	79.5°F	29mi
Futtsu	79.3°F	30mi
Chiba	79.6°F	33mi
Yokosuka	79.9°F	38mi
Yokohama	82.5°F	42mi
Kawasaki	82.7°F	42mi
Honchō	79.5°F	43mi

* current water temperature in this city

** straight line distance from Katsuura