All data are in degrees Fahrenheit

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Water temperature in Naha

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

75.5

°F

April 20, 09:22

Trend:

increasing

Yesterday:

75.4°F

Tomorrow:

75.7°F

Sunrise:

06:02

Sunset:

18:55

Day Length:

12 h. 53 min.

Naha in April

Minimum:

71.9°F

Average:

73.5°F

Maximum:

76.2°F

Sea water temperature in Naha today

As of now, in Naha, the water temperature is 75.5°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 2.4°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 rise a bit.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 73.7°F on 2019, while the historical minimum was 72.2°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. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 76.0°F, with minimum temperature starting at 75.7°F, while the maximum might reach 76.4°F.

Daily water temperature in Naha

Date Current Year

actual* / forecast**

last year 10 years average
Apr 6 73.0°F 70.7°F 72.3°F
Apr 7 73.5°F 70.8°F 72.4°F
Apr 8 73.8°F 70.4°F 72.4°F
Apr 9 74.0°F 71.0°F 72.5°F
Apr 10 73.9°F 70.8°F 72.4°F
Apr 11 74.1°F 71.0°F 72.4°F
Apr 12 74.6°F 71.2°F 72.7°F
Apr 13 75.1°F 71.6°F 72.9°F
Apr 14 76.0°F 70.8°F 72.8°F
Apr 15 76.3°F 70.0°F 72.9°F
Apr 16 75.6°F 70.7°F 72.9°F
Apr 17 75.4°F 71.6°F 73.2°F
Apr 18 75.4°F 71.9°F 73.2°F
Apr 19 75.4°F 71.5°F 73.0°F
Apr 20 75.5°F 72.2°F 73.1°F
Apr 21 75.7°F 72.1°F 73.3°F
Apr 22 75.7°F 72.2°F 73.3°F
Apr 23 76.0°F 73.6°F 73.6°F
Apr 24 76.0°F 72.9°F 73.6°F
Apr 25 76.1°F 73.3°F 73.7°F
Apr 26 76.4°F 73.3°F 74.0°F
Apr 27 76.4°F 72.3°F 74.0°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 Naha by month

In Naha, the months May through December offer comfortable swimming conditions, which amounts to 259 swimming days.
The warmest water in Naha was recorded on August 16, 2024, reaching a 87.6°F. While the coldest temperature occurred on March 17, 2026, dipping to 69.1°F. The average readings by season are 73.2°F in Winter, 73.5°F in Spring, 83.0°F in Summer, and 81.7°F in Autumn.