Waikiki Beach Water Temperature
Sea-surface temperature at Waikiki Beach, Hawaii · times in HST
Updated 1:03 AM HST
How it compares today
Water temperature through the year
Monthly normals computed from 2023–2025 daily sea-surface temperature history.
Nearby water right now
7-day outlook
| Day | Air high / low | Max UV | Rain |
|---|---|---|---|
| Fri, Aug 28 | 83° / 76° | 9 | 37% |
| Sat, Aug 29 | 82° / 74° | 8 | 59% |
| Sun, Aug 30 | 84° / 73° | 9 | 32% |
| Mon, Aug 31 | 80° / 74° | 9 | 57% |
| Tue, Sep 1 | 84° / 75° | 9 | 37% |
| Wed, Sep 2 | 83° / 75° | 9 | 25% |
| Thu, Sep 3 | 81° / 75° | 9 | 22% |
Sea-surface temperature and wave data from the Open-Meteo marine model; weather from Open-Meteo.
Is Waikiki Beach warm enough to swim?
At 80°F, the water at Waikiki Beach is warm — great for swimming. Most swimmers are comfortable without a wetsuit above 72°F; below 62°F, cold-water shock becomes a real risk for unprotected swimmers.
That is right on the August average of 80°F for this beach.
The water stays above 70°F essentially year round, ranging from about 76°F to 81°F.
Frequently asked questions
How warm is the water at Waikiki Beach right now?
The sea-surface temperature is about 80°F. That is right on the August average of 80°F for this beach.
When is the water warm enough to swim at Waikiki Beach?
The water stays above 70°F essentially year round, ranging from about 76°F to 81°F.
What is the warmest the water gets at Waikiki Beach?
Around 81°F in September, based on 2023–2025 records. The coolest month is February at roughly 76°F.