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

83.8

°F

October 3, 22:14

Trend:

decreasing

Yesterday:

83.8°F

Tomorrow:

83.7°F

Sunrise:

06:22

Sunset:

18:14

Day Length:

11 h. 52 min.

Naha in October

Minimum:

71.8°F

Average:

73.1°F

Maximum:

75.9°F

Sea water temperature in Naha today

As of now, in Naha, the water temperature is 83.8°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 0.5°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 reading indicates a minor change compared to the average water temperature of the last two weeks, but the overall trend remains steady. 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 86.4°F on 2025, while the historical minimum was 80.4°F on 2018.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 83.3°F, the minimum temperature may reach 83.0°F, and the maximum might stay at 83.7°F.

Daily water temperature in Naha

Date Current Year

actual* / forecast**

last year 10 years average
Sep 19 84.4°F 86.4°F 83.9°F
Sep 20 84.3°F 86.4°F 83.9°F
Sep 21 83.8°F 86.0°F 83.9°F
Sep 22 83.7°F 86.0°F 83.9°F
Sep 23 83.6°F 86.0°F 83.9°F
Sep 24 84.1°F 85.4°F 83.9°F
Sep 25 84.0°F 85.2°F 83.9°F
Sep 26 84.2°F 86.0°F 84.0°F
Sep 27 84.1°F 85.3°F 83.8°F
Sep 28 83.9°F 85.7°F 83.6°F
Sep 29 83.7°F 85.9°F 83.6°F
Sep 30 83.4°F 85.9°F 83.5°F
Oct 1 83.8°F 85.4°F 83.4°F
Oct 2 83.8°F 86.2°F 83.6°F
Oct 3 83.8°F 86.4°F 83.3°F
Oct 4 83.7°F 86.3°F 83.2°F
Oct 5 83.7°F 86.2°F 83.3°F
Oct 6 83.4°F 86.0°F 83.0°F
Oct 7 83.3°F 86.0°F 82.9°F
Oct 8 83.2°F 85.4°F 82.7°F
Oct 9 83.0°F 85.2°F 82.6°F
Oct 10 83.0°F 85.1°F 82.5°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 Naha by month

In Naha, the months May through December offer comfortable swimming conditions, which amounts to 261 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, 82.9°F in Summer, and 81.7°F in Autumn.