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

84.7

°F

September 17, 20:27

Trend:

increasing

Yesterday:

83.3°F

Tomorrow:

84.8°F

Sunrise:

05:51

Sunset:

18:12

Day Length:

12 h. 21 min.

Saijō in September

Minimum:

55.3°F

Average:

56.6°F

Maximum:

58.1°F

Sea water temperature in Saijō today

As of now, in Saijō, the water temperature is 84.7°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 4.4°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 83.2°F on 2024, while the historical minimum was 76.6°F on 2015.

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 shows a gradual cooling trend. The average temperature is expected to be 84.2°F, the minimum temperature may reach 83.3°F, and the maximum might stay at 84.8°F.

Daily water temperature in Saijō

Date Current Year

actual* / forecast**

last year 10 years average
Sep 3 86.4°F 82.4°F 82.5°F
Sep 4 86.1°F 81.8°F 82.2°F
Sep 5 85.4°F 82.3°F 82.1°F
Sep 6 84.7°F 82.0°F 81.9°F
Sep 7 84.1°F 84.2°F 82.0°F
Sep 8 83.8°F 82.9°F 81.6°F
Sep 9 83.6°F 83.2°F 81.5°F
Sep 10 83.9°F 84.2°F 81.7°F
Sep 11 83.6°F 85.9°F 81.9°F
Sep 12 84.2°F 83.8°F 81.6°F
Sep 13 83.8°F 84.5°F 81.7°F
Sep 14 83.8°F 85.4°F 81.7°F
Sep 15 83.1°F 84.6°F 81.2°F
Sep 16 83.3°F 84.3°F 81.0°F
Sep 17 84.7°F 83.2°F 80.3°F
Sep 18 84.8°F 84.3°F 80.3°F
Sep 19 84.5°F 84.2°F 80.1°F
Sep 20 84.6°F 86.2°F 80.1°F
Sep 21 84.3°F 85.2°F 79.8°F
Sep 22 84.0°F 84.3°F 79.6°F
Sep 23 83.7°F 83.6°F 79.2°F
Sep 24 83.3°F 82.5°F 78.9°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 121 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, 58.8°F in Spring, 77.9°F in Summer, and 74.5°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Niihama 85.9°F 8mi
Matsuyama 80.4°F 25mi
Fukuyama 84.7°F 41mi
Marugame 85.2°F 43mi
Hiroshima 81.9°F 54mi
Kurashiki 85.2°F 57mi
Takamatsu 84.7°F 57mi
Iwakuni 82.3°F 58mi
Okayama 84.4°F 66mi

* current water temperature in this city

** straight line distance from Saijō