Updated
Lake Waiau
Lake
A popular hiking stopover, this alpine lake sits just below the summit of Mauna Kea volcano.
Current water conditions
Live data from NOAA buoy KWHH1 (27.6 mi away), as of Aug 20, 8:00 PM UTC. Conditions are for general information only and can change quickly — always judge the water in person and follow posted advisories before swimming.
Weather at Lake Waiau
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Frequently asked questions
- Where is Lake Waiau?
- Lake Waiau is a lake in Hawaii.
- What is the water temperature at Lake Waiau?
- As of August 20, 2026, the water temperature at Lake Waiau in Hawaii is 83°F (28°C), measured by NOAA buoy KWHH1, 27.6 miles away.
- Can you swim at Lake Waiau?
- There is no fixed answer for Lake Waiau: whether it is safe to swim there on a given day depends on the water temperature, recent rainfall, and any advisories posted at Lake Waiau in Hawaii. Check current water conditions before you go, and follow posted signs and local guidance.
- How is Lake Waiau rated?
- Lake Waiau in Hawaii has an average visitor rating of 4.9 out of 5, based on 14 reviews.
Visitor Reviews
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Best Times to Visit
- ›Check for boat launch facilities and fees
- ›Obtain required fishing licenses before arrival
- ›Be aware of lake-specific regulations and restrictions
- ›Monitor water quality reports before swimming
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