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Level 4/10

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.

10-Day Forecast

Today

Poor

1.0mSW

@15s

7km/h

1.0m

@15s

7km/h

Mon

Poor

1.0mSW

@14s

5km/h

1.0m

@14s

5km/h

Tue

Fair

1.2mSW

@17s

7km/h

1.2m

@17s

7km/h

Wed

Fair

1.2mSW

@16s

8km/h

1.2m

@16s

8km/h

Thu

Fair

1.1mSW

@16s

7km/h

1.1m

@16s

7km/h

Fri

Poor

1.0mSW

@15s

9km/h

1.0m

@15s

9km/h

Sat

Poor

1.0mSW

@16s

8km/h

1.0m

@16s

8km/h

Sun

Poor

0.8mSSW

@15s

8km/h

0.8m

@15s

8km/h

Mon

Poor

0.8mSSW

@15s

8km/h

0.8m

@15s

8km/h

Tue

Poor

0.6mSSW

@15s

7km/h

0.6m

@15s

7km/h

View 2-year historical scores →

Today's Conditions

Find Flights

Swell

1.0m

SW(221°)

Score: 3/25

Period

15s

Long period groundswell

Score: 10/25

Wind

7km/h

SSE(156°)

Score: 17/25

Weather

27°C

1.2mm90%

Secondary Swell

0.4mW

Forecast Confidence

100%

Sources: open-meteo-marine, open-meteo-weather

Best Session

afternoon

AM: 12 km/h SE|PM: 4 km/h SE

4 km/h vs 12 km/h morning

High tide at 2pm (0.9m)

Location & Conditions

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Swell

Wind

View in OpenStreetMap

Showing forecast for today

Tide Times

6:45 am

Low tide - 0.24m

2:10 pm

High tide - 0.86m

9:00 pm

Low tide - 0.41m

Times shown in spot-local time.

Strike Score Breakdown

Poor

Components

Swell Direction6/25

Swell Size3/25

Swell Period10/25

Wind17/25

Raw Score36/100

Adjustments

⚠️ Weak Component-5

📉 Undersized Swell-7

🚫 Undersized Capmax 44

Adjusted Score24/100

Confidence

Multiplier×1.00

Final Score24

Location & Conditions

Loading map...

Swell

Wind

View in OpenStreetMap

Showing forecast for today

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