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Stormy Petrel

Free surf forecasts · No paywall, no ads.

Data sources

NWPS — nearshore wave model
WAVEWATCH III — spectral swell
HRRR — 3 km wind
NDBC — realtime buoys
CO-OPS — tide predictions

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Forecasts refresh every 8 h · buoys every 3 h

Florida

Cape San Blas

1.0Updated 0 min ago

Face

0.8ft

4s period

Swell

SSE

153°

Windoffshore

9 mph

NNE

Tide

↓0.9 ft

falling

Conditions

Clean

swell mix · 97% wind sea

Swell breakdown

NWPS height + WW3

Wind sea

ENE

0.6ft

2s

not surfable

not surfable

P1 (primary)

SSE

0.4ft

4s

55%

P2 (secondary)

SSW

0.3ft

6s

29%

P3 (tertiary)

SSW

0.2ft

6s

16%

Swell components (ft) · next 48h

Wind speed (mph) · next 48h

Tide (ft) · next 48h

Spot info

Break—

Tide preference—

Optimal conditions

SwellSSW 208°

WindNE offshore

Tide—

Break—

Nearest buoy

BuoyNDBC 42039

Hs1.3 ft

Tp5s

DirSE

Water—

Reading9/1/2026, 2:50:00 PM

View NDBC station page →

7-day forecast

Time

Rating

Face

Period

Swell

Wind

Tide

Tue, Sep 1

11am

0.8

6s

SSE162°

3mphcross-off

0.8ft

2pm

0.8

7s

S190°

9mphcross

0.8ft↑

5pm

0.8

4s

S179°

6mphcross-on

0.9ft↑

8pm

0.7

3s

SSE155°

4mphonshore

1.2ft↑

11pm

0.7

3s

S176°

3mphcross

1.5ft

Wed, Sep 2

2am

0.6

3s

S181°

5mphoffshore

1.8ft↓

5am

0.6

7s

SSW194°

9mphcross-off

1.7ft↓

8am

0.7

6s

SW214°

11mphcross-off

1.2ft↓

11am

0.8

7s

SSW194°

7mphcross

0.7ft↓

2pm

0.9

7s

SSW192°

9mphcross-off

0.5ft↑

5pm

0.9

5s

SSE163°

0mphcross

0.7ft↑

8pm

0.8

3s

SE145°

7mphcross-off

1.0ft↑

11pm

0.8

4s

SE139°

7mphcross-off

1.5ft

Thu, Sep 3

2am

0.8

7s

SSW194°

8mphcross-off

1.9ft↑

5am

0.8

7s

SSW194°

11mphcross-off

2.0ft↓

8am

1.0

7s

SSW193°

14mphcross-off

1.5ft

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