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

79.7

°F

November 13, 16:51

Trend:

decreasing

Yesterday:

79.9°F

Tomorrow:

79.6°F

Sunrise:

06:41

Sunset:

17:50

Day Length:

11 h. 9 min.

Honolulu in November

Minimum:

76.2°F

Average:

77.3°F

Maximum:

78.3°F

Sea water temperature in Honolulu today

As of now, in Honolulu, the water temperature is 79.7°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.4°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 81.8°F on 2019, while the historical minimum was 79.2°F on 2025.

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 79.2°F, the minimum temperature may reach 79.0°F, and the maximum might stay at 79.6°F.

Daily water temperature in Honolulu

Date Current Year

actual* / forecast**

last year 10 years average
Oct 30 80.1°F 80.2°F 80.7°F
Oct 31 80.3°F 80.0°F 80.5°F
Nov 1 80.6°F 80.0°F 80.6°F
Nov 2 80.6°F 79.9°F 80.6°F
Nov 3 80.1°F 79.9°F 80.6°F
Nov 4 79.9°F 79.9°F 80.6°F
Nov 5 79.9°F 79.8°F 80.5°F
Nov 6 79.9°F 79.7°F 80.4°F
Nov 7 80.0°F 79.7°F 80.3°F
Nov 8 80.0°F 79.9°F 80.3°F
Nov 9 79.8°F 79.9°F 80.3°F
Nov 10 79.9°F 79.5°F 80.3°F
Nov 11 79.9°F 79.4°F 80.2°F
Nov 12 79.9°F 79.2°F 80.1°F
Nov 13 79.7°F 79.2°F 80.1°F
Nov 14 79.6°F 78.9°F 80.0°F
Nov 15 79.4°F 79.0°F 79.8°F
Nov 16 79.3°F 79.0°F 79.7°F
Nov 17 79.2°F 78.8°F 79.6°F
Nov 18 79.2°F 79.1°F 79.6°F
Nov 19 79.1°F 79.1°F 79.5°F
Nov 20 79.0°F 79.1°F 79.4°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.