All data are in degrees Fahrenheit

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Water temperature in Honolulu

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

75.9

°F

February 25, 08:05

Trend:

decreasing

Yesterday:

76.0°F

Tomorrow:

75.8°F

Sunrise:

06:55

Sunset:

18:34

Day Length:

11 h. 39 min.

Honolulu in March

Minimum:

75.8°F

Average:

77.3°F

Maximum:

78.5°F

Sea water temperature in Honolulu today

As of now, in Honolulu, the water temperature is 75.9°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.2°F lower 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 slightly lower than the average registered over the last two weeks, indicating a slight cooling 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 77.4°F on 2025, while the historical minimum was 74.7°F on 2019.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 75.5°F, the minimum temperature may reach 75.2°F, and the maximum might stay at 75.8°F.

Daily water temperature in Honolulu

Date Current Year

actual* / forecast**

last year 10 years average
Feb 11 77.0°F 76.8°F 76.2°F
Feb 12 76.6°F 76.8°F 76.1°F
Feb 13 76.6°F 77.0°F 76.1°F
Feb 14 76.6°F 76.9°F 76.1°F
Feb 15 76.4°F 77.0°F 76.1°F
Feb 16 76.5°F 77.0°F 76.1°F
Feb 17 76.4°F 77.0°F 76.1°F
Feb 18 76.5°F 77.2°F 76.1°F
Feb 19 76.3°F 76.8°F 76.0°F
Feb 20 76.2°F 77.0°F 76.0°F
Feb 21 76.2°F 77.0°F 76.1°F
Feb 22 76.2°F 77.0°F 76.1°F
Feb 23 75.8°F 77.3°F 76.0°F
Feb 24 76.0°F 77.6°F 76.1°F
Feb 25 75.9°F 77.4°F 76.1°F
Feb 26 75.8°F 77.4°F 76.0°F
Feb 27 75.8°F 77.3°F 75.9°F
Feb 28 75.7°F 77.3°F 75.8°F
Mar 1 75.3°F 77.3°F 75.8°F
Mar 2 75.3°F 77.5°F 75.8°F
Mar 3 75.2°F 77.6°F 75.8°F
Mar 4 75.2°F 77.2°F 75.8°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 Honolulu by month

In Honolulu, the water temperature is comfortable for swimming all year round.
The warmest water in Honolulu was recorded on September 29, 2019, reaching a 83.2°F. While the coldest temperature occurred on March 2, 2019, dipping to 73.7°F. The average readings by season are 77.1°F in Winter, 77.0°F in Spring, 79.8°F in Summer, and 80.6°F in Autumn.