What is the current water temperature in Katsuura?

Q: What is the current water temperature in Katsuura?

As of now, in Katsuura, the water temperature is 22.69°C. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool.

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.

72.8

°F

May 30, 08:44

Trend:

stable

Yesterday:

73.2°F

Tomorrow:

73.2°F

Sunrise:

04:27

Sunset:

18:46

Day Length:

14 h. 19 min.

Katsuura in June

Minimum:

59.5°F

Average:

63.5°F

Maximum:

66.9°F

Sea water temperature in Katsuura today

As of now, in Katsuura, the water temperature is 72.8°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 4.5°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 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 72.0°F on 2018, while the historical minimum was 66.1°F on 2024.

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 73.3°F, with minimum temperature starting at 73.0°F, while the maximum might reach 73.8°F.

Daily water temperature in Katsuura

Date	Current Year actual* / forecast**	last year	10 years average
May 16	68.2°F	65.5°F	65.8°F
May 17	70.1°F	65.8°F	65.9°F
May 18	71.9°F	66.0°F	66.1°F
May 19	71.6°F	66.2°F	66.3°F
May 20	70.3°F	64.0°F	66.3°F
May 21	70.4°F	65.3°F	66.5°F
May 22	70.2°F	65.4°F	66.7°F
May 23	69.7°F	65.6°F	67.1°F
May 24	67.4°F	65.8°F	67.5°F
May 25	66.3°F	65.9°F	67.6°F
May 26	68.3°F	66.2°F	67.9°F
May 27	70.8°F	66.5°F	68.1°F
May 28	72.5°F	67.0°F	68.4°F
May 29	73.2°F	67.7°F	68.7°F
May 30	72.8°F	68.0°F	68.3°F
May 31	73.2°F	68.4°F	68.7°F
Jun 1	73.3°F	69.2°F	68.8°F
Jun 2	73.4°F	70.0°F	68.9°F
Jun 3	73.2°F	69.9°F	68.7°F
Jun 4	73.0°F	68.0°F	68.5°F
Jun 5	73.8°F	71.0°F	69.2°F
Jun 6	73.5°F	70.3°F	69.0°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, 74.9°F in Summer, and 75.1°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Isumi	69.9°F	8mi
Kisarazu	69.9°F	27mi
Ichihara	71.0°F	29mi
Kimitsu	70.0°F	29mi
Futtsu	70.6°F	30mi
Chiba	71.5°F	33mi
Yokosuka	69.9°F	38mi
Yokohama	69.8°F	42mi
Kawasaki	70.6°F	42mi
Honchō	72.7°F	43mi

* current water temperature in this city

** straight line distance from Katsuura