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Las Islitas (Matanchen Bay)

San Blas, Mexico
🌀Strong rips🚶Difficult access

Las Islitas in Matanchen Bay holds the Guinness World Record for the world's longest rideable wave at 5,700 feet. When conditions align—typically needing a large, long-period south swell—the wave can connect through multiple points for rides lasting several minutes. While jetty construction has altered the wave somewhat, it still offers the potential for extraordinarily long rides on the right day. The wave is mellow and forgiving, making those marathon rides accessible to surfers of various skill levels.

3-Day Forecast
Today
29
15
Poor
0.4m
@17s
8km/h
Thu
30
15
Poor
0.4m
@16s
11km/h
Fri
1
15
Poor
0.5m
@16s
10km/h
+7
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Today's Conditions

Swell
0.4m
SW(219°)
Score: 1/25
Period
17s
Long period groundswell
Score: 25/25
Wind
8km/h
W(259°)
Score: 13/25
Weather
28°C
0.0mm83%
Secondary Swell
0.2mWSW
Forecast Confidence
100%
Sources: open-meteo-marine, open-meteo-weather
Best Session
morning
AM: 4 km/h NNE|PM: 9 km/h WSW
4 km/h vs 9 km/h afternoon
High tide at 6am (0.6m)

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

12:50 am
Low tide - -0.43m
6:55 am
High tide - 0.61m
12:35 pm
Low tide - -0.15m
6:38 pm
High tide - 0.87m
Times shown in spot-local time.

Strike Score Breakdown

15
Poor
Components
Swell Direction7/25
Swell Size1/25
Swell Period25/25
Wind13/25
Raw Score46/100
Adjustments
⚠️ Weak Component-5
🚫 Undersized Capmax 15
Adjusted Score41/100
Confidence
Multiplier×1.00
Final Score15

Spot Details

Swell Requirements

Optimal direction
S (180°)
Direction range
170° - 190°
Size range
1.2m - 2.4m
Ideal size
2.0m
Height multiplier
0.97×
Ideal period
17s+

Wind Requirements

Optimal direction
NE (45°)
Offshore range
30° - 60°

Tide Requirements

Optimal tide
mid to high

Water temp

28°C

Wetsuit

Boardshorts / Rashguard

Difficulty

4/10

Crowd level

3/10

Access: Drive to San Blas, then to bay. Basic town accommodations.

Best Season

Peak: Jun-Sep

Secondary: May, Oct

Needs specific long-period south swell. Rare but epic.

Getting There

Airport
PVR
Drive time
180 min
Data quality
verified

Strike Log

Community Discussion