All data are in degrees Fahrenheit

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Water temperature in Ishigaki

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

78.2

°F

April 15, 03:45

Trend:

stable

Yesterday:

78.2°F

Tomorrow:

78.1°F

Sunrise:

06:23

Sunset:

19:05

Day Length:

12 h. 42 min.

Ishigaki in April

Minimum:

73.8°F

Average:

75.3°F

Maximum:

76.9°F

Sea water temperature in Ishigaki today

As of now, in Ishigaki, the water temperature is 78.2°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.7°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 notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 80.1°F on 2024, while the historical minimum was 74.1°F on 2025.

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 78.5°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Ishigaki

Date Current Year

actual* / forecast**

last year 10 years average
Apr 1 77.2°F 73.8°F 75.5°F
Apr 2 77.1°F 73.5°F 75.5°F
Apr 3 77.3°F 74.0°F 75.6°F
Apr 4 76.6°F 73.8°F 75.5°F
Apr 5 75.5°F 73.3°F 75.3°F
Apr 6 75.8°F 73.4°F 75.5°F
Apr 7 76.1°F 73.7°F 75.5°F
Apr 8 75.8°F 73.8°F 75.5°F
Apr 9 76.3°F 73.7°F 75.6°F
Apr 10 77.5°F 74.0°F 75.7°F
Apr 11 77.5°F 74.0°F 75.8°F
Apr 12 78.0°F 74.4°F 76.0°F
Apr 13 78.1°F 74.4°F 76.3°F
Apr 14 78.2°F 74.4°F 76.5°F
Apr 15 78.2°F 74.1°F 76.5°F
Apr 16 78.1°F 74.1°F 76.3°F
Apr 17 78.1°F 74.1°F 76.4°F
Apr 18 78.3°F 74.7°F 76.6°F
Apr 19 78.5°F 75.5°F 76.7°F
Apr 20 78.7°F 76.4°F 76.9°F
Apr 21 78.9°F 77.3°F 77.2°F
Apr 22 79.2°F 77.6°F 77.5°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 Ishigaki by month

In Ishigaki, the water temperature is comfortable for swimming all year round.
The warmest water in Ishigaki was recorded on July 19, 2024, reaching a 88.6°F. While the coldest temperature occurred on February 14, 2025, dipping to 71.5°F. The average readings by season are 75.1°F in Winter, 76.9°F in Spring, 84.7°F in Summer, and 82.4°F in Autumn.