Big Wave
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Level 10/10

Roca Cuadrada

Matanzas, Chile
😮‍💨Hold-downs🪨Rocks🏝️Remote

Roca Cuadrada ("Square Rock") is a big wave left reef near Matanzas that comes alive on massive SW swells. Named for a distinctive square-shaped rock, the wave can produce 30-foot faces for tow-in chargers.

10-Day Forecast
Today
21
26
Poor
4.3m
@16s
12km/h
Mon
22
14
Poor
3.0m
@14s
13km/h
Tue
23
15
Poor
2.1m
@15s
12km/h
Wed
24
30
Poor
2.4m
@16s
7km/h
Thu
25
15
Poor
2.2m
@15s
6km/h
Fri
26
8
Poor
2.3m
@16s
16km/h
Sat
27
27
Poor
4.1m
@14s
10km/h
Sun
28
27
Poor
3.1m
@15s
8km/h
Mon
29
30
Poor
2.4m
@15s
5km/h
Tue
30
30
Poor
2.9m
@15s
8km/h

Today's Conditions

Find Flights
Swell
4.3m
SW(233°)
Score: 5/25
Period
16s
Long period groundswell
Score: 6/25
Wind
12km/h
SSW(194°)
Score: 7/25
Weather
11°C
0.0mm7%
Windswell Component
0.2mSSW@2s
Secondary Swell
0.1mWSW
Forecast Confidence
100%
Sources: open-meteo-marine, open-meteo-weather
Best Session
morning
AM: 10 km/h SSE|PM: 11 km/h WSW
Lighter winds early (10 km/h)

Location & Conditions

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

Tide Times

3:08 am
High tide - 0.30m
8:56 am
Low tide - -0.35m
3:02 pm
High tide - 0.47m
9:50 pm
Low tide - -0.59m
Times shown in spot-local time.

Strike Score Breakdown

26
Poor
Components
Swell Direction19/25
Swell Size5/25
Swell Period6/25
Wind7/25
Raw Score37/100
Adjustments
🌊 Tide-3
📉 Undersized Swell-8
🚫 Undersized Capmax 64
Adjusted Score26/100
Confidence
Multiplier×1.00
Final Score26
🌊 Too low for this tide window
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Spot Details

Swell Requirements

Optimal direction
SW (225°)
Direction range
200° - 250°
Size range
4.5m - 9m
Ideal size
7.0m
Height multiplier
1.08×
Ideal period
20s+

Wind Requirements

Optimal direction
E (90°)
Offshore range
70° - 110°

Tide Requirements

Optimal tide
all
Optimal range
0.5m - 2m

Water temp

13°C

Wetsuit

4/3mm fullsuit

Difficulty

10/10

Crowd level

1/10

Access: Near Matanzas. Big wave spot.

Best Season

Peak: May-Sep

Secondary: Apr, Oct

Big wave spot. Needs massive swell.

Getting There

Airport
SCL
Drive time
160 min
Data quality
community

Strike Log

Community Discussion