Half Moon Bay water temperature today

Half Moon Bay, California

Half Moon Bay water temperature today is 57°F. Is it cold? It's cold for most people, so plan on a 4/3mm fullsuit.

Water temperature refreshed hourly from a latitude-based estimate.

Pack the right rubber and you'll extend your sessions in Half Moon Bay by an hour. Temps swing from upwelling lows to summer peaks, and the difference between a 3/2 and a 4/3 day can come overnight.

57°F
4/3mm fullsuit

Thicker suit needed for cold water

Recommended extras: booties recommended

7-Day Temperature Trend

Data from Mavericks · Updated hourly

Beach Water Temperatures

Current water temperatures at each surf spot. Temperatures can vary based on local conditions, currents, and depth.

Mavericks surf break
57°F

Mavericks

4/3mm fullsuit

Surf spots in Half Moon Bay

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Featured Beaches(1)

Mavericks

Advanced

One of the most famous big-wave spots on Earth, Mavericks breaks a half-mile offshore over a shallow reef, producing giant right and left walls when long-period NW swells march in. Only expert big-wave surfers with safety teams should attempt it.

Spot guide for Half Moon Bay

Break types, ratings, and local tips for each beach.

Mavericks
reef
advanced

One of the most famous big-wave spots on Earth, Mavericks breaks a half-mile offshore over a shallow reef, producing giant right and left walls when long-period NW swells march in. Only expert big-wave surfers with safety teams should attempt it.

What to know about water temperature

  • Weekly temperature trends and seasonal averages
  • Gear recommendations for dawn patrol versus midday
  • Upwelling signals that drop temps overnight
  • Health and recovery tips for long cold sessions

Surf Guides for Half Moon Bay

Conditions

Dawn Patrol
Best early morning sessions
Sunset Sessions
Evening golden hour spots
Tide Windows
Optimal tidal conditions
Water Temperature
You're here

Style

Less Crowded
Quieter lineups & backups

Frequently Asked Questions

About surfing in Half Moon Bay

Half Moon Bay water is 57°F today, which is cold for most people, so most surfers wear a 4/3mm fullsuit. Wind, air temperature, and session length change how cold it feels.
Half Moon Bay water is 57°F today. Readings differ from beach to beach and through the day, so check the per-beach temperatures on this page before you go.
Water temperatures in Half Moon Bay typically range from 55-72°F. For summer, spring suit or 3/2mm is recommended. In winter, you'll want 4/3mm. Spring and fall may require adjusting based on your cold tolerance.
Water temperatures in Half Moon Bay range from 55-72°F, so most surfers wear at least spring suit or 3/2mm even in summer. A wetsuit is recommended year-round for longer sessions and early morning surfs.

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