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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.
Sea temperature in Saijō now

55.9

°F

January 24, 18:12

Trend:

stable

Yesterday:

55.8°F

Tomorrow:

55.5°F

Sunrise:

07:10

Sunset:

17:29

Day Length:

10 h. 19 min.

Saijō in January

Minimum:

56.5°F

Average:

58.6°F

Maximum:

60.0°F

Sea water temperature in Saijō today

As of now, in Saijō, the water temperature is 55.9°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 about the same as 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 slightly 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 59.0°F on 2016, while the historical minimum was 53.9°F on 2025.

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 maximum recorded over the past years. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 55.0°F, the minimum temperature may reach 54.6°F, and the maximum might stay at 55.5°F.

Daily water temperature in Saijō

Date Current Year

actual* / forecast**

 last year 10 years average
Jan 10 57.7°F 56.4°F 56.6°F
Jan 11 57.5°F 56.1°F 56.5°F
Jan 12 56.8°F 56.1°F 56.1°F
Jan 13 57.1°F 55.3°F 56.1°F
Jan 14 57.1°F 54.8°F 56.3°F
Jan 15 57.2°F 55.9°F 56.4°F
Jan 16 56.0°F 55.5°F 56.2°F
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 55.5°F 53.9°F 55.3°F
Jan 26 55.1°F 53.8°F 55.0°F
Jan 27 55.1°F 54.0°F 55.0°F
Jan 28 55.2°F 54.4°F 55.1°F
Jan 29 55.1°F 54.0°F 55.0°F
Jan 30 54.7°F 51.9°F 54.5°F
Jan 31 54.6°F 52.2°F 54.5°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

January

February

March

April

May

June

July

August

September

October

November

December

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 54.8°F 8mi
Matsuyama 56.1°F 25mi
Fukuyama 54.1°F 41mi
Marugame 53.3°F 43mi
Hiroshima 54.6°F 54mi
Kurashiki 55.3°F 57mi
Takamatsu 51.0°F 57mi
Iwakuni 53.7°F 58mi
Okayama 50.7°F 66mi

* current water temperature in this city

** straight line distance from Saijō