Reef
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Level 6/10

Mavericks

Half Moon Bay, USA (CA)
⚠️Shallow🪨Rocks🪸Sharp reef

Mavericks is Northern California's big wave proving ground—a cold, shark-infested, boulder-strewn reef off Half Moon Bay that produces some of North America's most dangerous surf. The wave breaks over a submerged rock field, creating an unpredictable playing surface that has claimed lives. When winter storms send massive NW swells down the coast, Mavericks holds waves in the 40-60 foot range. The competition here has become one of big wave surfing's most prestigious events. Paddle-in purists still consider it the ultimate test.

3-Day Forecast
Today
29
15
Poor
1.8m
@18s
12km/h
Thu
30
13
Poor
2.2m
@16s
12km/h
Fri
1
15
Poor
2.4m
@15s
10km/h
+7
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Today's Conditions

Swell
1.8m
NW(304°)
Score: 0/25
Period
18s
Long period groundswell
Score: 25/25
Wind
12km/h
WNW(296°)
Score: 5/25
Weather
14°C
0.0mm97%
Windswell Component
0.4mNW@2s
Secondary Swell
0.5mWNW
Forecast Confidence
100%
Sources: open-meteo-marine, open-meteo-weather
Best Session
morning
AM: 6 km/h NNW|PM: 16 km/h NW
6 km/h vs 16 km/h afternoon
Mid tide at 10am (0.4m)

Location & Conditions

Loading map...
0°45°90°135°180°225°270°315°NESW
Swell
Wind
View in OpenStreetMap
Showing forecast for today

Tide Times

4:15 am
Low tide - -0.90m
10:24 am
High tide - 0.38m
3:55 pm
Low tide - -0.50m
10:02 pm
High tide - 0.81m
Times shown in spot-local time.

📊 Buoy ValidationBuoy Data

Santa Maria

327 km away

Source: noaa

Forecast Validation
Buoy observed: 0.0m
Forecast error: ±1.8m

Strike Score Breakdown

15
Poor
Components
Swell Direction16/25
Swell Size0/25
Swell Period25/25
Wind5/25
Raw Score46/100
Adjustments
⚠️ Weak Component-10
🚫 Undersized Capmax 15
Adjusted Score36/100
Confidence
Multiplier×1.00
Final Score15

Spot Details

Swell Requirements

Optimal direction
WNW (290°)
Direction range
270° - 315°
Size range
7.6m - 18.3m
Ideal size
15.0m
Height multiplier
1.08×
Ideal period
18s+

Wind Requirements

Optimal direction
E (90°)
Offshore range
45° - 135°

Tide Requirements

Optimal tide
low to mid

Difficulty

6/10

Crowd level

3/10

Access: Paddle/jet ski

Getting There

Airport
SFO
Drive time
45 min
Data quality
community

Strike Log

Community Discussion