Reef
both
Level 5/10

Cobblestones

East Sumbawa, Indonesia
🪸Sharp reef

Cobblestones is a small channel break near Lakey Peak in East Sumbawa, offering both lefts and rights on a compact reef. The wave provides a fun option when the main breaks are too crowded or too big, with shorter rides and a more relaxed atmosphere. It's one of several satellite breaks in the Hu'u area that extends the surfable options beyond the famous Lakey Peak and Lakey Pipe.

3-Day Forecast
Today
30
79
Good
1.1m
@14s
10km/h
Tue
31
44
Poor
0.7m
@17s
7km/h
Wed
1
64
Fair
0.8m
@16s
7km/h
+7
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Today's Conditions

Swell
1.1m
SSW(212°)
Score: 10/25
Period
14s
Long period groundswell
Score: 25/25
Wind
10km/h
ESE(118°)
Score: 21/25
Weather
27°C
0.0mm56%
Windswell Component
0.2mE@2s
Secondary Swell
0.3mSE
Forecast Confidence
100%
Sources: open-meteo-marine, open-meteo-weather
Best Session
morning
AM: 6 km/h E|PM: 10 km/h ESE
Lighter winds early (6 km/h)
Tide at 8am (1.3m)

Location & Conditions

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0°45°90°135°180°225°270°315°NESW
Swell
Wind
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Showing forecast for today

Tide Times

2:30 am
Low tide - -0.31m
8:51 am
High tide - 1.26m
2:40 pm
Low tide - -0.05m
8:40 pm
High tide - 1.47m
Times shown in spot-local time.

Strike Score Breakdown

79
Good
Components
Swell Direction23/25
Swell Size10/25
Swell Period25/25
Wind21/25
Raw Score79/100
Confidence
Multiplier×1.00
Final Score79

Spot Details

Swell Requirements

Optimal direction
SW (215°)
Direction range
200° - 230°
Size range
0.9m - 1.8m
Ideal size
1.6m
Height multiplier
1.03×
Ideal period
14s+

Wind Requirements

Optimal direction
E (90°)
Offshore range
60° - 120°

Tide Requirements

Optimal tide
mid
Optimal range
0.5m - 1.5m

Water temp

28°C

Wetsuit

Boardshorts / Rashguard

Difficulty

5/10

Crowd level

4/10

Best Season

Peak: Apr-Oct

Secondary: Nov, Dec, Jan, Feb, Mar

Best Apr-Oct (dry season, SE trades offshore). Swells year-round but wet season brings onshore winds.

Getting There

Airport
BMU
Drive time
30 min
Data quality
community

Strike Log

Community Discussion