All data are in degrees Fahrenheit

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Water temperature in Matsuyama

Detailed information about the current water temperature in Matsuyama. 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 Matsuyama now

77.9

°F

August 9, 22:56

Trend:

stable

Yesterday:

77.8°F

Tomorrow:

77.9°F

Sunrise:

05:26

Sunset:

19:03

Day Length:

13 h. 37 min.

Matsuyama in August

Minimum:

56.4°F

Average:

57.9°F

Maximum:

59.3°F

Sea water temperature in Matsuyama today

As of now, in Matsuyama, the water temperature is 77.9°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.6°F lower 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 stay about the same.

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 aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 80.1°F on 2016, while the historical minimum was 76.7°F on 2020.

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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 78.0°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Matsuyama

Date Current Year

actual* / forecast**

last year 10 years average
Jul 26 80.9°F 76.2°F 76.7°F
Jul 27 80.7°F 76.6°F 76.6°F
Jul 28 82.5°F 73.8°F 77.1°F
Jul 29 82.3°F 74.0°F 77.6°F
Jul 30 81.0°F 73.9°F 77.3°F
Jul 31 80.2°F 73.9°F 77.6°F
Aug 1 79.1°F 74.9°F 77.7°F
Aug 2 78.6°F 76.3°F 77.6°F
Aug 3 80.2°F 78.2°F 78.2°F
Aug 4 81.2°F 78.9°F 78.3°F
Aug 5 79.8°F 79.6°F 78.0°F
Aug 6 78.7°F 79.0°F 78.0°F
Aug 7 78.5°F 80.7°F 78.3°F
Aug 8 77.8°F 80.3°F 78.4°F
Aug 9 77.9°F 80.4°F 78.6°F
Aug 10 77.9°F 80.4°F 78.6°F
Aug 11 77.9°F 80.5°F 78.6°F
Aug 12 77.7°F 79.3°F 78.3°F
Aug 13 78.0°F 79.3°F 78.6°F
Aug 14 78.2°F 78.8°F 78.8°F
Aug 15 78.1°F 78.7°F 78.7°F
Aug 16 78.1°F 78.0°F 78.7°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 Matsuyama by month

In Matsuyama, the months July through October offer comfortable swimming conditions, which amounts to 107 swimming days.
The warmest water in Matsuyama was recorded on July 28, 2026, reaching a 82.5°F. While the coldest temperature occurred on March 5, 2022, dipping to 50.0°F. The average readings by season are 57.8°F in Winter, 57.0°F in Spring, 73.3°F in Summer, and 73.4°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Saijō 85.2°F 25mi
Niihama 86.0°F 32mi
Iwakuni 84.4°F 38mi
Hiroshima 83.8°F 43mi
Fukuyama 85.7°F 56mi

* current water temperature in this city

** straight line distance from Matsuyama