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Cape Ann Seasonal Surf Averages

Based on the last ten years data for this location this page gives seasonal trends and an idea of what kind of conditions you can expect and when. Of course these are just averages - it's worth reading carefully to understand exactly what they mean and to recognise the kind of variation you could expect on a trip because an average can never tell the whole story. Click on a month below to see more detail.
If you want a past forecast for a specific date range then click here.

Local Photo


Swell Consistency and Wind Overview

Wind Swell Ground Swell
13%
4%

9%

Jan
21%
8%

13%

Feb
24%
9%

15%

Mar
22%
3%

19%

Apr
21%
1%

20%

May
11%
 
11%

Jun
5%
 
5%

Jul
8%
3%

5%

Aug
17%
9%

8%

Sep
20%
6%

14%

Oct
22%
8%

14%

Nov
11%
4%

7%

Dec
This graph shows the percentage of days that had a ridable wind swell (7 seconds period or more) or groundswell (10 seconds period or more) of over 3ft. It also shows the dominant wind direction. Not all of these days will neccessarily give great surf, and very short lived wind swells or longer period secondary swells may produce surf not recorded, but it gives a clear idea of the seasonal trend and a rough guide to the chances of scoring something ridable.

Monthly Overview

Jan
Swell
Consistency
13%
Average Swell
Height
4ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Feb
Swell
Consistency
21%
Average Swell
Height
4ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Mar
Swell
Consistency
24%
Average Swell
Height
5ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
Apr
Swell
Consistency
22%
Average Swell
Height
4ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
May
Swell
Consistency
21%
Average Swell
Height
4ft
Average Swell
Period
8s
Dominant Wind
Dominant Swell
Jun
Swell
Consistency
11%
Average Swell
Height
3ft
Average Swell
Period
8s
Dominant Wind
Dominant Swell
Jul
Swell
Consistency
5%
Average Swell
Height
2ft
Average Swell
Period
8s
Dominant Wind
Dominant Swell
Aug
Swell
Consistency
8%
Average Swell
Height
2ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Sep
Swell
Consistency
17%
Average Swell
Height
3ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Oct
Swell
Consistency
20%
Average Swell
Height
4ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Nov
Swell
Consistency
22%
Average Swell
Height
4ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Dec
Swell
Consistency
11%
Average Swell
Height
4ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell

Understanding this Data

These swell averages are calculated ONLY on swells of more than 7 seconds period. This means this is the average height of a swell that's likely to produce ridable surf NOT an average of every wave heading toward the beach in a month. Likewise the period is the average period OVER 7 seconds. There will be days that have short period wind swells that won't produce and ridable swell and these are excluded from the averages. The consistency figure gives the percentage of days that meet this condition.

For example if the consistency is 50% you could expect the 'average' swell for about 15 days in the month. Of course an average tells only part of the story. A combination of very large and very small swells may produce the same average as a consistent medium sized swell.

Monthly Data

January
February
March
April
May
June
July
August
September
October
November
December

Nearby Spots

Seabrook Beach
Hampton Beach
The Wall
Costellos
Linkys
Nahant
Rye Rocks
Jenness Beach
Nantasket Beach
Scituate
Long Sands
Short Sands
Green Harbor
Ogunquit River
Kennebunk Beach
Fortunes Rocks
Old Orchard Beach
Cape Cod
Higgins Beach
New England Hurricane
Long Point
South Beach
Abels Hill
Lucy Vincent
2nd Beach (Sachuest Beach)
Squibnocket
1st Beach (Eastons Beach)
Ruggles
Bailey's Beach
Elbow Ledge
Narragansett Beach
Monahan's Dock
Lighthouse (Point Judith)
K38/39
Matunuck
Breachway
Misquamicut
Turtle Cove
North Bar
Ditch Plains
Fortress
Atlantic Terrace
Mastic Beach
Fire Island
Robert Moses State Park
Jones Beach State Park
Tobay Beach
Lido Beach
Long Beach
Rockaway
The Cove
Deal
Asbury Park
Manasquan
Casino Pier
New Jersey Hurricane
Surf City
Holyoke
States Avenue
Longport, 32nd St.
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Sea Isle City
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Indian River
Western Head
Ocean City, MD
Virginia Beach