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Stormy Petrel

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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 6 h · buoys hourly

Massachusetts

Nantasket Beach

beachtide: mid

1.0Updated 0 min ago

Face

0.6ft

7s period

Swell

E

92°

Windcross

8 mph

SSE

Tide

0.2 ft

slack

ConditionsBlown out

Blown out

100% wind sea

Swell breakdown

WAVEWATCH III

Wind sea

SSE

1.6ft

4s

not surfable

not surfable

P1 (primary)

E

0.5ft

7s

57%

P2 (secondary)

Swell components (ft) · next 48h

Spot info

Breakbeach

Tide preferencemid

Crowd—

Hazards—

Optimal conditions

SwellNE 55°

WindSW offshore

Tidemid

Period10s+

Breakbeach

Nearest buoy

BuoyNDBC 44013

Hs—

Tp—

Dir

7-day forecast

Time

Rating

Face

Period

Swell

Wind

Tide

Thu, May 14

2am

0.6

7s

E91°

8mphcross

0.3ft↑

5am

0.6

9s

E92°

11mphcross

5.7ft↑

8am

FLAT

0.4

11s

E89°

14mphcross

9.6ft↓

11am

FLAT

0.5

11s

E85°

12mphcross-on

4.6ft↓

2pm

FLAT

0.3

12s

E81°

17mphonshore

0.4ft↑

5pm

0.5

11s

E87°

7mphcross-on

5.7ft↑

8pm

1.4

9s

E90°

8mphonshore

10.8ft↓

11pm

2.8

6s

E90°

7mphcross-on

5.9ft

Fri, May 15

2am

2.8

6s

E88°

8mphcross-on

-0.3ft↑

5am

2.7

9s

E93°

7mphonshore

3.3ft↑

8am

3.8

10s

E89°

6mphcross-on

9.6ft↓

11am

4.1

10s

E86°

5mphcross-on

6.6ft↓

2pm

4.1

10s

E83°

6mphcross-off

0.5ft↑

5pm

4.0

10s

E81°

2mphcross

3.6ft↑

8pm

3.6

10s

E82°

4mphcross

10.8ft↓

11pm

3.3

10s

E84°

6mphoffshore

8.3ft

← Back to map More spots in Massachusetts

Report incorrect data

E

0.5ft

11s

43%

Wind speed (mph) · next 48h

Tide (ft) · next 48h

—

Water50°F

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

View NDBC station page →