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

83.3

°F

September 15, 16:22

Trend:

stable

Yesterday:

83.8°F

Tomorrow:

83.3°F

Sunrise:

05:47

Sunset:

18:13

Day Length:

12 h. 26 min.

Marugame in September

Minimum:

51.0°F

Average:

53.9°F

Maximum:

57.9°F

Sea water temperature in Marugame today

As of now, in Marugame, the water temperature is 83.3°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 2.5°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 considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 84.3°F on 2024, while the historical minimum was 77.3°F on 2015.

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 shows a gradual cooling trend. The average temperature is expected to be 82.9°F, the minimum temperature may reach 82.5°F, and the maximum might stay at 83.3°F.

Daily water temperature in Marugame

Date Current Year

actual* / forecast**

last year 10 years average
Sep 1 85.7°F 83.4°F 82.6°F
Sep 2 87.0°F 82.9°F 82.4°F
Sep 3 86.3°F 82.8°F 82.2°F
Sep 4 86.3°F 83.0°F 82.2°F
Sep 5 85.7°F 83.2°F 82.0°F
Sep 6 84.9°F 82.6°F 82.0°F
Sep 7 84.3°F 83.4°F 81.8°F
Sep 8 83.8°F 83.4°F 81.5°F
Sep 9 83.6°F 83.9°F 81.4°F
Sep 10 83.8°F 84.1°F 81.5°F
Sep 11 83.4°F 84.9°F 81.6°F
Sep 12 83.2°F 84.5°F 81.6°F
Sep 13 83.0°F 84.6°F 81.5°F
Sep 14 83.8°F 85.0°F 81.3°F
Sep 15 83.3°F 84.3°F 80.8°F
Sep 16 83.3°F 84.6°F 80.8°F
Sep 17 83.2°F 85.0°F 80.7°F
Sep 18 83.1°F 85.0°F 80.6°F
Sep 19 82.8°F 85.1°F 80.3°F
Sep 20 82.8°F 86.0°F 80.3°F
Sep 21 82.6°F 85.2°F 80.1°F
Sep 22 82.5°F 84.4°F 80.0°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 113 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 54.6°F in Winter, 57.6°F in Spring, 76.2°F in Summer, and 74.2°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Takamatsu 83.4°F 16mi
Kurashiki 84.2°F 21mi
Okayama 83.4°F 27mi
Fukuyama 83.4°F 27mi
Niihama 84.8°F 35mi
Saijō 83.4°F 43mi
Tokushima 79.7°F 47mi
Himeji 82.5°F 64mi

* current water temperature in this city

** straight line distance from Marugame