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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.
Sea temperature in Katsuura now

66.3

°F

November 18, 15:33

Trend:

stable

Yesterday:

66.9°F

Tomorrow:

66.3°F

Sunrise:

06:16

Sunset:

16:32

Day Length:

10 h. 16 min.

Katsuura in November

Minimum:

60.4°F

Average:

63.6°F

Maximum:

66.2°F

Sea water temperature in Katsuura today

As of now, in Katsuura, the water temperature is 66.3°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 3.9°F lower 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 stay about the same.

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 is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 73.4°F on 2024, while the historical minimum was 68.0°F on 2023.

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 minimum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 66.0°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
Nov 4 69.0°F 75.7°F 72.9°F
Nov 5 69.4°F 76.2°F 72.7°F
Nov 6 69.6°F 75.9°F 72.9°F
Nov 7 71.0°F 74.8°F 72.6°F
Nov 8 71.5°F 74.4°F 72.2°F
Nov 9 71.0°F 73.7°F 71.5°F
Nov 10 70.6°F 73.4°F 71.2°F
Nov 11 69.4°F 73.2°F 71.0°F
Nov 12 68.9°F 72.6°F 70.4°F
Nov 13 68.7°F 72.5°F 70.3°F
Nov 14 68.3°F 72.4°F 70.3°F
Nov 15 66.5°F 74.5°F 70.8°F
Nov 16 67.4°F 74.1°F 70.8°F
Nov 17 66.9°F 73.6°F 70.8°F
Nov 18 66.3°F 73.4°F 70.2°F
Nov 19 66.3°F 73.3°F 70.2°F
Nov 20 66.3°F 72.2°F 70.2°F
Nov 21 65.9°F 69.7°F 69.8°F
Nov 22 65.9°F 71.2°F 69.9°F
Nov 23 66.0°F 70.1°F 70.0°F
Nov 24 65.9°F 71.8°F 69.8°F
Nov 25 65.9°F 71.7°F 69.8°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

January

February

March

April

May

June

July

August

September

October

November

December

In Katsuura, the months July through October offer comfortable swimming conditions, which amounts to 115 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, 74.8°F in Summer, and 74.9°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Isumi 65.4°F 8mi
Kisarazu 62.7°F 27mi
Ichihara 62.0°F 29mi
Kimitsu 62.4°F 29mi
Futtsu 62.9°F 30mi
Chiba 61.8°F 33mi
Yokosuka 63.9°F 38mi
Yokohama 62.5°F 42mi
Kawasaki 62.0°F 42mi
Honchō 60.9°F 43mi

* current water temperature in this city

** straight line distance from Katsuura