What is the current water temperature in Marugame?

Q: What is the current water temperature in Marugame?

As of now, in Marugame, the water temperature is 13.33°C. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

Japan > Marugame

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.

56.0

°F

April 5, 23:42

Trend:

increasing

Yesterday:

55.4°F

Tomorrow:

56.3°F

Sunrise:

05:48

Sunset:

18:28

Day Length:

12 h. 40 min.

Marugame in April

Minimum:

51.8°F

Average:

54.4°F

Maximum:

57.8°F

Sea water temperature in Marugame today

As of now, in Marugame, the water temperature is 56.0°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 1.2°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 also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 58.2°F on 2021, while the historical minimum was 51.9°F on 2025.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 56.9°F, with minimum temperature starting at 56.3°F, while the maximum might reach 57.5°F.

Daily water temperature in Marugame

Date	Current Year actual* / forecast**	last year	10 years average
Mar 22	52.1°F	50.3°F	52.8°F
Mar 23	52.6°F	48.4°F	53.2°F
Mar 24	51.8°F	51.2°F	53.2°F
Mar 25	52.4°F	49.6°F	53.1°F
Mar 26	52.9°F	50.4°F	53.2°F
Mar 27	52.2°F	50.1°F	53.2°F
Mar 28	54.0°F	50.9°F	53.7°F
Mar 29	53.4°F	51.8°F	54.0°F
Mar 30	55.4°F	52.4°F	53.9°F
Mar 31	54.4°F	53.0°F	54.1°F
Apr 1	56.1°F	53.5°F	54.6°F
Apr 2	55.1°F	54.0°F	54.7°F
Apr 3	55.2°F	54.1°F	54.6°F
Apr 4	55.4°F	52.5°F	54.7°F
Apr 5	56.0°F	51.9°F	54.8°F
Apr 6	56.3°F	53.4°F	55.1°F
Apr 7	56.4°F	54.2°F	55.2°F
Apr 8	56.6°F	53.8°F	55.4°F
Apr 9	57.1°F	55.1°F	55.9°F
Apr 10	57.3°F	53.1°F	56.2°F
Apr 11	57.5°F	54.2°F	56.3°F
Apr 12	57.3°F	54.4°F	56.2°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, 57.3°F in Spring, 76.3°F in Summer, and 74.6°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Takamatsu	55.0°F	16mi
Kurashiki	56.8°F	21mi
Okayama	57.8°F	27mi
Fukuyama	56.6°F	27mi
Niihama	56.8°F	35mi
Saijō	57.5°F	43mi
Tokushima	56.2°F	47mi
Himeji	55.5°F	64mi

* current water temperature in this city

** straight line distance from Marugame