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
Thu
30
96
Epic
1.9m
@16s
9km/h
Fri
1
97
Epic
1.8m
@16s
10km/h
Sat
2
98
Epic
1.7m
@15s
12km/h
+7
Unlock

Today's Conditions

Groomed
Clean faces from offshore winds
Swell
1.9m
SW(215°)
Score: 15/25
Period
16s
Long period groundswell
Score: 25/25
Wind
9km/h
E(96°)
Score: 25/25
Weather
26°C
0.3mm91%
Windswell Component
0.2mE@2s
Secondary Swell
0.4mSSE
Forecast Confidence
100%
Sources: open-meteo-marine, open-meteo-weather
Best Session
afternoon
AM: 8 km/h ENE|PM: 7 km/h ESE
Lighter winds later (7 km/h)
Tide at 3pm (-0.6m)

Location & Conditions

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0°45°90°135°180°225°270°315°NESW
Swell
Wind
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Tide Times

2:52 am
Low tide - -0.33m
9:03 am
High tide - 1.73m
3:30 pm
Low tide - -0.63m
9:35 pm
High tide - 1.42m
Times shown in spot-local time.

Strike Score Breakdown

96
Epic
Components
Swell Direction25/25
Swell Size15/25
Swell Period25/25
Wind25/25
Raw Score90/100
Adjustments
Wind History+6
Adjusted Score96/100
Confidence
Multiplier×1.00
Final Score96
✨ Groomed

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