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 19.82°C. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool.

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.

67.7

°F

May 24, 00:44

Trend:

increasing

Yesterday:

67.2°F

Tomorrow:

68.4°F

Sunrise:

05:01

Sunset:

19:07

Day Length:

14 h. 6 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 67.7°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 1.4°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

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 67.3°F on 2019, while the historical minimum was 65.1°F on 2025.

latest data

last year

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 suggests a gradual increase. The average temperature is expected to rise up to 68.7°F, with minimum temperature starting at 68.4°F, while the maximum might reach 69.5°F.

Daily water temperature in Saijō

Date	Current Year actual* / forecast**	last year	10 years average
May 10	63.4°F	61.7°F	62.3°F
May 11	63.6°F	61.8°F	62.3°F
May 12	64.6°F	62.3°F	62.8°F
May 13	65.6°F	61.2°F	63.1°F
May 14	66.4°F	64.3°F	63.3°F
May 15	67.9°F	64.0°F	63.8°F
May 16	66.5°F	62.6°F	64.2°F
May 17	67.8°F	62.7°F	64.1°F
May 18	68.1°F	63.7°F	64.8°F
May 19	67.5°F	63.8°F	64.8°F
May 20	69.8°F	64.1°F	65.0°F
May 21	69.2°F	64.1°F	65.2°F
May 22	67.4°F	64.2°F	65.2°F
May 23	67.2°F	64.9°F	65.8°F
May 24	67.7°F	65.1°F	66.3°F
May 25	68.4°F	65.3°F	67.0°F
May 26	68.4°F	65.2°F	67.0°F
May 27	68.5°F	65.4°F	67.1°F
May 28	68.5°F	65.1°F	67.1°F
May 29	68.9°F	65.4°F	67.5°F
May 30	68.9°F	65.6°F	67.5°F
May 31	69.5°F	69.0°F	68.1°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, 58.8°F in Spring, 78.2°F in Summer, and 74.9°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Niihama	68.2°F	8mi
Matsuyama	63.2°F	25mi
Fukuyama	68.0°F	41mi
Marugame	67.1°F	43mi
Hiroshima	66.6°F	54mi
Kurashiki	67.3°F	57mi
Takamatsu	67.3°F	57mi
Iwakuni	66.6°F	58mi
Okayama	68.1°F	66mi

* current water temperature in this city

** straight line distance from Saijō