All data are in degrees Fahrenheit

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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.
Sea temperature in Katsuura now

74.1

°F

November 1, 02:32

Trend:

stable

Yesterday:

74.2°F

Tomorrow:

74.4°F

Sunrise:

05:59

Sunset:

16:45

Day Length:

10 h. 46 min.

Katsuura in November

Minimum:

60.4°F

Average:

63.7°F

Maximum:

66.2°F

Sea water temperature in Katsuura today

As of now, in Katsuura, the water temperature is 74.1°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.0°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 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 aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 77.5°F on 2024, while the historical minimum was 71.0°F on 2022.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 74.0°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
Oct 18 77.9°F 77.6°F 75.8°F
Oct 19 76.1°F 78.2°F 75.7°F
Oct 20 77.7°F 77.6°F 75.5°F
Oct 21 78.0°F 76.8°F 75.4°F
Oct 22 76.9°F 76.4°F 75.4°F
Oct 23 76.8°F 76.1°F 74.9°F
Oct 24 76.6°F 77.7°F 75.1°F
Oct 25 76.3°F 77.5°F 74.9°F
Oct 26 76.0°F 77.0°F 74.7°F
Oct 27 75.7°F 76.0°F 74.5°F
Oct 28 75.1°F 75.8°F 74.1°F
Oct 29 74.5°F 75.4°F 73.6°F
Oct 30 74.2°F 73.4°F 73.3°F
Oct 31 74.2°F 73.0°F 73.2°F
Nov 1 74.1°F 73.0°F 73.2°F
Nov 2 74.4°F 72.1°F 73.4°F
Nov 3 74.3°F 69.6°F 73.3°F
Nov 4 74.2°F 69.0°F 73.3°F
Nov 5 73.9°F 69.4°F 73.0°F
Nov 6 74.2°F 69.6°F 73.2°F
Nov 7 73.9°F 71.0°F 72.9°F
Nov 8 73.4°F 71.5°F 72.4°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, 62.8°F in Spring, 75.0°F in Summer, and 75.1°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Isumi 72.4°F 8mi
Kisarazu 71.4°F 27mi
Ichihara 71.3°F 29mi
Kimitsu 71.3°F 29mi
Futtsu 71.2°F 30mi
Chiba 71.2°F 33mi
Yokosuka 71.0°F 38mi
Yokohama 72.2°F 42mi
Kawasaki 71.5°F 42mi
Honchō 71.1°F 43mi

* current water temperature in this city

** straight line distance from Katsuura