All data are in degrees Fahrenheit

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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.
Sea temperature in Saijō now

75.9

°F

October 18, 13:53

Trend:

decreasing

Yesterday:

76.2°F

Tomorrow:

75.7°F

Sunrise:

06:14

Sunset:

17:31

Day Length:

11 h. 17 min.

Saijō in October

Minimum:

55.0°F

Average:

56.6°F

Maximum:

57.9°F

Sea water temperature in Saijō today

As of now, in Saijō, the water temperature is 75.9°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.6°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 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 77.9°F on 2025, while the historical minimum was 73.3°F on 2020.

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 74.9°F, the minimum temperature may reach 73.9°F, and the maximum might stay at 75.7°F.

Daily water temperature in Saijō

Date Current Year

actual* / forecast**

last year 10 years average
Oct 4 79.3°F 78.5°F 78.4°F
Oct 5 79.0°F 78.2°F 78.1°F
Oct 6 78.8°F 78.9°F 78.0°F
Oct 7 78.8°F 79.9°F 77.8°F
Oct 8 78.1°F 79.2°F 77.4°F
Oct 9 77.6°F 78.7°F 77.1°F
Oct 10 77.0°F 78.4°F 76.9°F
Oct 11 76.9°F 78.5°F 76.6°F
Oct 12 76.9°F 78.0°F 76.4°F
Oct 13 77.2°F 78.7°F 76.4°F
Oct 14 77.4°F 77.8°F 76.0°F
Oct 15 77.3°F 78.0°F 75.9°F
Oct 16 76.8°F 78.4°F 75.9°F
Oct 17 76.2°F 78.2°F 75.5°F
Oct 18 75.9°F 77.9°F 75.3°F
Oct 19 75.7°F 77.2°F 75.1°F
Oct 20 75.5°F 76.6°F 74.9°F
Oct 21 75.3°F 76.3°F 74.6°F
Oct 22 74.8°F 75.8°F 74.1°F
Oct 23 74.5°F 75.4°F 73.9°F
Oct 24 74.4°F 75.9°F 73.7°F
Oct 25 73.9°F 74.9°F 73.3°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 121 swimming days.
The warmest water in Saijō was recorded on August 5, 2026, reaching a 88.0°F. While the coldest temperature occurred on March 9, 2025, dipping to 49.4°F. The average readings by season are 57.0°F in Winter, 58.8°F in Spring, 78.2°F in Summer, and 74.9°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Niihama 76.2°F 8mi
Matsuyama 75.8°F 25mi
Fukuyama 75.6°F 41mi
Marugame 75.7°F 43mi
Hiroshima 76.0°F 54mi
Kurashiki 75.8°F 57mi
Takamatsu 76.3°F 57mi
Iwakuni 75.7°F 58mi
Okayama 76.2°F 66mi

* current water temperature in this city

** straight line distance from Saijō