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

74.4

°F

November 8, 01:43

Trend:

decreasing

Yesterday:

74.9°F

Tomorrow:

73.7°F

Sunrise:

06:06

Sunset:

16:39

Day Length:

10 h. 33 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 74.4°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 2.0°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 fall a bit.

Recent sea temperature and forecast

Today's water temperature closely matches the previous two weeks' average, indicating a stable trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 74.7°F on 2016, while the historical minimum was 69.7°F on 2023.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 73.0°F, the minimum temperature may reach 72.4°F, and the maximum might stay at 73.7°F.

Daily water temperature in Katsuura

Date Current Year

actual* / forecast**

last year 10 years average
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 74.2°F
Oct 29 75.3°F 75.4°F 73.6°F
Oct 30 75.4°F 73.4°F 73.3°F
Oct 31 73.9°F 73.0°F 73.2°F
Nov 1 72.2°F 73.0°F 73.2°F
Nov 2 73.1°F 72.1°F 73.4°F
Nov 3 73.3°F 69.6°F 73.3°F
Nov 4 73.7°F 69.0°F 73.3°F
Nov 5 74.4°F 69.4°F 73.0°F
Nov 6 74.8°F 69.6°F 73.2°F
Nov 7 74.9°F 71.0°F 72.9°F
Nov 8 74.4°F 71.5°F 72.4°F
Nov 9 73.7°F 71.0°F 71.7°F
Nov 10 73.5°F 70.6°F 71.5°F
Nov 11 73.2°F 69.4°F 71.2°F
Nov 12 72.6°F 68.9°F 70.6°F
Nov 13 72.4°F 68.7°F 70.5°F
Nov 14 72.4°F 68.3°F 70.4°F
Nov 15 73.0°F 66.5°F 71.0°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 70.1°F 8mi
Kisarazu 68.5°F 27mi
Ichihara 68.5°F 29mi
Kimitsu 68.3°F 29mi
Futtsu 68.2°F 30mi
Chiba 68.1°F 33mi
Yokosuka 67.8°F 38mi
Yokohama 66.5°F 42mi
Kawasaki 66.6°F 42mi
Honchō 67.6°F 43mi

* current water temperature in this city

** straight line distance from Katsuura