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 18.15°C. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

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.

64.7

°F

May 15, 00:01

Trend:

increasing

Yesterday:

64.3°F

Tomorrow:

64.9°F

Sunrise:

05:03

Sunset:

18:59

Day Length:

13 h. 56 min.

Marugame in May

Minimum:

50.5°F

Average:

54.4°F

Maximum:

58.1°F

Sea water temperature in Marugame today

As of now, in Marugame, the water temperature is 64.7°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 1.9°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 is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 64.5°F on 2019, while the historical minimum was 59.6°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 65.6°F, with minimum temperature starting at 64.9°F, while the maximum might reach 66.1°F.

Daily water temperature in Marugame

Date	Current Year actual* / forecast**	last year	10 years average
May 1	62.3°F	58.6°F	59.9°F
May 2	63.0°F	59.1°F	60.0°F
May 3	62.1°F	59.8°F	60.2°F
May 4	62.1°F	58.9°F	60.4°F
May 5	63.0°F	60.5°F	60.5°F
May 6	63.4°F	60.8°F	61.3°F
May 7	60.6°F	60.5°F	61.4°F
May 8	62.0°F	60.7°F	61.8°F
May 9	62.0°F	61.0°F	62.0°F
May 10	63.1°F	61.1°F	62.1°F
May 11	64.3°F	61.0°F	62.0°F
May 12	64.1°F	61.6°F	62.5°F
May 13	61.6°F	60.4°F	62.2°F
May 14	64.3°F	60.2°F	62.4°F
May 15	64.7°F	59.6°F	62.7°F
May 16	64.9°F	59.5°F	62.9°F
May 17	65.3°F	60.1°F	63.4°F
May 18	65.3°F	62.0°F	63.3°F
May 19	65.6°F	62.2°F	63.6°F
May 20	65.8°F	61.9°F	63.8°F
May 21	66.1°F	62.3°F	64.2°F
May 22	66.0°F	62.6°F	64.1°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 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, 57.4°F in Spring, 76.3°F in Summer, and 74.6°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Takamatsu	63.7°F	16mi
Kurashiki	65.9°F	21mi
Okayama	66.4°F	27mi
Fukuyama	65.8°F	27mi
Niihama	66.8°F	35mi
Saijō	66.8°F	43mi
Tokushima	65.2°F	47mi
Himeji	65.7°F	64mi

* current water temperature in this city

** straight line distance from Marugame