Honolulu — Water Temperature, Sea Conditions & Trends

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health.

It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Water Temperature Chart Over the Last 30 Days

Water temperature in Honolulu has risen over the last week and month. Currently, the sea water temperature at this location matches the average for this day in previous years.

According to our forecast, Water temperature in Honolulu will be 26.0°C in the next 7 days. See the table below for daily data for the upcoming week.

Table of Daily Sea Temperature Data

Annual Water Temperature Overview by Month

Monthly Water Temp Ranges

30°C

25°C

20°C

15°C

10°c

5°C

0°C

Annual Water Temperature Trend

Honolulu, on the southeastern shore of the island of Oahu, enjoys a mild tropical ocean climate with sea temperatures that stay fairly steady through the year. Typical water temperatures range from around 23°C in the coolest winter months to about 28°C at the height of summer. During December through February the ocean commonly hovers near 23–24°C, spring sees a gradual rise into the mid-20s, and the warmest conditions are usually reached in late summer and early autumn with temperatures near 27–28°C. Local variations occur with currents, wind and seasonal swell patterns, so short-term changes of a degree or two are normal, but overall the water remains inviting for most visitors year-round.