What is the current water temperature in Saijō?

Q: What is the current water temperature in Saijō?

As of now, in Saijō, the water temperature is 12.35°C. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

Japan > Saijō

Water temperature in Saijō

Detailed information about the current water temperature in Saijō. 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.

54.2

°F

January 31, 17:56

Trend:

decreasing

Yesterday:

54.5°F

Tomorrow:

54.1°F

Sunrise:

07:06

Sunset:

17:36

Day Length:

10 h. 30 min.

Saijō in February

Minimum:

56.9°F

Average:

58.5°F

Maximum:

59.8°F

Sea water temperature in Saijō today

As of now, in Saijō, the water temperature is 54.2°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 0.3°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 also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 57.9°F on 2016, while the historical minimum was 52.2°F on 2025.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 53.9°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Saijō

Date	Current Year actual* / forecast**	last year	10 years average
Jan 17	55.8°F	55.6°F	56.4°F
Jan 18	56.1°F	55.5°F	56.4°F
Jan 19	56.8°F	55.9°F	56.5°F
Jan 20	56.5°F	55.3°F	56.2°F
Jan 21	56.5°F	54.9°F	55.8°F
Jan 22	55.9°F	54.8°F	55.7°F
Jan 23	55.8°F	54.7°F	55.8°F
Jan 24	55.9°F	53.9°F	55.7°F
Jan 25	56.3°F	53.9°F	55.4°F
Jan 26	55.9°F	53.8°F	55.0°F
Jan 27	55.9°F	54.0°F	55.1°F
Jan 28	55.0°F	54.4°F	55.1°F
Jan 29	54.7°F	54.0°F	55.0°F
Jan 30	54.5°F	51.9°F	54.5°F
Jan 31	54.2°F	52.2°F	54.5°F
Feb 1	54.1°F	52.6°F	54.4°F
Feb 2	54.1°F	53.1°F	54.3°F
Feb 3	54.1°F	53.5°F	54.4°F
Feb 4	54.1°F	53.7°F	54.3°F
Feb 5	54.0°F	53.4°F	54.2°F
Feb 6	53.7°F	52.7°F	54.0°F
Feb 7	53.7°F	53.1°F	53.9°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 Saijō by month

In Saijō, the months July through October offer comfortable swimming conditions, which amounts to 123 swimming days.

The warmest water in Saijō was recorded on August 1, 2024, reaching a 87.8°F. While the coldest temperature occurred on March 9, 2025, dipping to 49.4°F. The average readings by season are 57.1°F in Winter, 58.7°F in Spring, 78.2°F in Summer, and 74.9°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Niihama	52.0°F	8mi
Matsuyama	54.3°F	25mi
Fukuyama	50.7°F	41mi
Marugame	50.4°F	43mi
Hiroshima	54.2°F	54mi
Kurashiki	51.0°F	57mi
Takamatsu	49.0°F	57mi
Iwakuni	53.8°F	58mi
Okayama	48.9°F	66mi

* current water temperature in this city

** straight line distance from Saijō