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Half Moon Bay State Beach
State park · Half Moon Bay, California
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Current water conditions
Live data from NOAA buoy AAMC1 (21.8 mi away), as of Aug 20, 10:30 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 Half Moon Bay State Beach









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Frequently asked questions
- Where is Half Moon Bay State Beach?
- Half Moon Bay State Beach is a state park in Half Moon Bay, California.
- What is the water temperature at Half Moon Bay State Beach?
- As of August 20, 2026, the water temperature at Half Moon Bay State Beach in Half Moon Bay, California is 68°F (20°C), measured by NOAA buoy AAMC1, 21.8 miles away.
- Can you swim at Half Moon Bay State Beach?
- There is no fixed answer for Half Moon Bay State Beach: whether it is safe to swim there on a given day depends on the water temperature, recent rainfall, and any advisories posted at Half Moon Bay State Beach in Half Moon Bay, California. Check current water conditions before you go, and follow posted signs and local guidance.
- How is Half Moon Bay State Beach rated?
- Half Moon Bay State Beach in Half Moon Bay, California has an average visitor rating of 4.7 out of 5, based on 131 reviews.
- What amenities does Half Moon Bay State Beach have?
- Visitor-listed amenities at Half Moon Bay State Beach include camping-nearby.
Visitor Reviews
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Been here? A quick note helps the next visitor plan their day. Handy things to mention:
Best Times to Visit
- ›Weekday mornings (8–10 AM) are typically less crowded
- ›Check the forecast 2–3 days ahead for best planning
- ›Avoid holiday weekends for a quieter experience