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 17.28°C. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

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.

63.1

°F

May 4, 00:13

Trend:

increasing

Yesterday:

62.6°F

Tomorrow:

63.5°F

Sunrise:

05:16

Sunset:

18:53

Day Length:

13 h. 37 min.

Saijō in May

Minimum:

56.7°F

Average:

58.2°F

Maximum:

59.3°F

Sea water temperature in Saijō today

As of now, in Saijō, the water temperature is 63.1°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 1.8°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. 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 63.8°F on 2019, while the historical minimum was 59.2°F on 2025.

latest data

last year

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 suggests a gradual increase. The average temperature is expected to rise up to 64.0°F, with minimum temperature starting at 63.5°F, while the maximum might reach 64.5°F.

Daily water temperature in Saijō

Date	Current Year actual* / forecast**	last year	10 years average
Apr 20	60.6°F	56.9°F	58.8°F
Apr 21	60.7°F	58.9°F	59.2°F
Apr 22	61.5°F	60.7°F	59.7°F
Apr 23	61.9°F	60.7°F	60.0°F
Apr 24	61.7°F	59.9°F	60.2°F
Apr 25	61.8°F	60.4°F	60.4°F
Apr 26	60.6°F	61.1°F	60.5°F
Apr 27	60.8°F	61.3°F	60.5°F
Apr 28	61.1°F	61.3°F	60.6°F
Apr 29	62.2°F	61.0°F	61.0°F
Apr 30	62.2°F	60.6°F	60.9°F
May 1	62.9°F	60.5°F	60.9°F
May 2	62.3°F	60.3°F	60.9°F
May 3	62.6°F	58.7°F	60.8°F
May 4	63.1°F	59.2°F	61.3°F
May 5	63.5°F	61.4°F	61.7°F
May 6	63.8°F	61.5°F	62.1°F
May 7	64.2°F	62.0°F	62.5°F
May 8	64.4°F	62.1°F	62.6°F
May 9	64.5°F	62.1°F	62.7°F
May 10	63.9°F	61.6°F	62.1°F
May 11	63.9°F	61.6°F	62.2°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 57.0°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	62.5°F	8mi
Matsuyama	59.0°F	25mi
Fukuyama	63.2°F	41mi
Marugame	62.3°F	43mi
Hiroshima	59.0°F	54mi
Kurashiki	63.5°F	57mi
Takamatsu	62.0°F	57mi
Iwakuni	60.8°F	58mi
Okayama	62.5°F	66mi

* current water temperature in this city

** straight line distance from Saijō