All data are in degrees Fahrenheit

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Water temperature in Marugame

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

83.6

°F

August 31, 13:28

Trend:

decreasing

Yesterday:

83.9°F

Tomorrow:

83.6°F

Sunrise:

05:37

Sunset:

18:33

Day Length:

12 h. 56 min.

Marugame in September

Minimum:

51.0°F

Average:

53.6°F

Maximum:

57.9°F

Sea water temperature in Marugame today

As of now, in Marugame, the water temperature is 83.6°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 0.7°F higher 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 slightly 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 86.2°F on 2025, while the historical minimum was 80.6°F on 2016.

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 83.2°F, the minimum temperature may reach 82.9°F, and the maximum might stay at 83.6°F.

Daily water temperature in Marugame

Date Current Year

actual* / forecast**

last year 10 years average
Aug 17 82.4°F 83.4°F 82.6°F
Aug 18 82.0°F 83.7°F 82.3°F
Aug 19 82.1°F 83.9°F 82.3°F
Aug 20 83.4°F 83.7°F 82.3°F
Aug 21 83.9°F 84.0°F 82.7°F
Aug 22 83.6°F 84.5°F 82.9°F
Aug 23 84.2°F 84.3°F 83.1°F
Aug 24 84.9°F 84.2°F 83.1°F
Aug 25 85.2°F 83.9°F 83.1°F
Aug 26 85.6°F 83.7°F 83.2°F
Aug 27 86.2°F 84.6°F 83.3°F
Aug 28 85.3°F 84.6°F 83.3°F
Aug 29 84.8°F 84.4°F 83.0°F
Aug 30 83.9°F 85.7°F 83.2°F
Aug 31 83.6°F 86.2°F 82.9°F
Sep 1 83.6°F 85.7°F 82.9°F
Sep 2 83.4°F 87.0°F 82.8°F
Sep 3 83.2°F 86.3°F 82.5°F
Sep 4 83.2°F 86.3°F 82.6°F
Sep 5 83.1°F 85.7°F 82.4°F
Sep 6 83.0°F 84.9°F 82.3°F
Sep 7 82.9°F 84.3°F 82.2°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 Marugame by month

In Marugame, the months July through October offer comfortable swimming conditions, which amounts to 116 swimming days.
The warmest water in Marugame was recorded on September 2, 2025, reaching a 87.0°F. While the coldest temperature occurred on February 16, 2018, dipping to 45.3°F. The average readings by season are 54.2°F in Winter, 57.5°F in Spring, 76.4°F in Summer, and 74.6°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Takamatsu 83.8°F 16mi
Kurashiki 83.2°F 21mi
Okayama 84.6°F 27mi
Fukuyama 86.6°F 27mi
Niihama 86.6°F 35mi
Saijō 87.0°F 43mi
Tokushima 83.6°F 47mi
Himeji 84.8°F 64mi

* current water temperature in this city

** straight line distance from Marugame