⌘K

Map Cams Reports Regions Blog

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

About

About
How forecasts work
Blog
GitHub

Forecasts refresh every 6 h · buoys hourly

Massachusetts

Marconi Beach

beachtide: mid

1.0Updated 0 min ago

Face

0.9ft

7s period

Swell

E

96°

Windcross

11 mph

SE

Tide

0.2 ft

slack

ConditionsBlown out

Blown out

66% wind sea

Swell breakdown

WAVEWATCH III

Wind sea

SSE

2.0ft

4s

not surfable

not surfable

P1 (primary)

E

0.6ft

10s

45%

P2 (secondary)

E

0.6ft

7s

45%

P3 (tertiary)

E

0.3ft

13s

10%

Swell components (ft) · next 48h

Wind speed (mph) · next 48h

Tide (ft) · next 48h

Spot info

Breakbeach

Tide preferencemid

Crowd—

Hazards—

Optimal conditions

SwellE 79°

WindW offshore

Tidemid

Period10s+

Breakbeach

Nearest buoy

BuoyNDBC 44098

Hs3.6 ft

Tp6s

DirSE

Water48°F

Reading5/14/2026, 5:00:00 AM

View NDBC station page →

7-day forecast

Time

Rating

Face

Period

Swell

Wind

Tide

Thu, May 14

2am

0.9

7s

E96°

14mphcross

0.2ft↑

5am

0.9

10s

E99°

15mphcross-on

5.4ft↑

8am

FLAT

0.5

13s

E85°

17mphonshore

10.2ft↓

11am

FLAT

0.4

12s

E86°

9mphonshore

5.5ft↓

2pm

0.5

12s

E84°

10mphcross-on

0.5ft↑

5pm

0.9

10s

E95°

14mphonshore

5.3ft↑

8pm

0.8

10s

E85°

1mphoffshore

11.4ft↓

11pm

4.2

7s

ESE105°

8mphonshore

6.9ft

Fri, May 15

2am

4.6

9s

ESE103°

5mphonshore

-0.0ft↑

5am

5.6

10s

E100°

2mphonshore

2.7ft↑

8am

6.1

10s

E97°

7mphcross

10.1ft↓

11am

5.9

10s

E94°

9mphcross

7.6ft↓

2pm

5.7

10s

E90°

7mphcross

0.9ft↑

5pm

5.5

10s

E86°

6mphcross-off

3.0ft↑

8pm

5.1

10s

E87°

5mphcross

11.2ft↓

11pm

4.7

10s

E88°

7mphcross-off

9.3ft

← Back to map More spots in Massachusetts

Report incorrect data