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Harlyn 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
82%
67%

15%

Jan
68%
51%

17%

Feb
62%
47%

15%

Mar
56%
30%

26%

Apr
45%
14%

31%

May
49%
8%

41%

Jun
35%
3%

32%

Jul
31%
2%

29%

Aug
52%
21%

31%

Sep
59%
31%

28%

Oct
61%
36%

25%

Nov
68%
49%

19%

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
82%
Average Swell
Height
10ft
Average Swell
Period
12s
Dominant Wind
Dominant Swell
Feb
Swell
Consistency
68%
Average Swell
Height
8ft
Average Swell
Period
11s
Dominant Wind
Dominant Swell
Mar
Swell
Consistency
62%
Average Swell
Height
7ft
Average Swell
Period
11s
Dominant Wind
Dominant Swell
Apr
Swell
Consistency
56%
Average Swell
Height
6ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
May
Swell
Consistency
45%
Average Swell
Height
5ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Jun
Swell
Consistency
49%
Average Swell
Height
4ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Jul
Swell
Consistency
35%
Average Swell
Height
4ft
Average Swell
Period
8s
Dominant Wind
Dominant Swell
Aug
Swell
Consistency
31%
Average Swell
Height
4ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Sep
Swell
Consistency
52%
Average Swell
Height
5ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
Oct
Swell
Consistency
59%
Average Swell
Height
8ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
Nov
Swell
Consistency
61%
Average Swell
Height
8ft
Average Swell
Period
11s
Dominant Wind
Dominant Swell
Dec
Swell
Consistency
68%
Average Swell
Height
9ft
Average Swell
Period
11s
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

Mawgan Porth
Polzeath
Watergate Bay
Lusty Glaze
Newquay - Towan / Great Western
Newquay - Fistral North
Perranporth (Droskyn)
Porthtowan
Falmouth
Widemouth Bay
Gwithian
Bude - Crooklets
Sandymouth
Praa Sands
Whitsand Bay
Sennen
Croyde Beach
Putsborough
Freshwater West
Manorbier
Bantham
Tenby South Beach
Llangennith / Rhossili
Newgale
Whitesands Bay
Langland Bay
Teignmouth
Aberavon
Exmouth
Porthcawl - Coney Beach
Sidmouth (Lyme Bay)
Lampaul Ploudalmezeau
Le Dossen
Lyme Regis
Borth / Ynyslas
Blancs-Sablons
Tywyn to Aberdovey
Pors Ar Villec (Locquirec)
Hells Mouth
Trestaou
Barmouth
Baie des Trépassés (Lescoff)
Vazon Bay - Beach - Guernsey
Anglesey
Tramore - Strand
Dublin Area
La Torche
Jersey
Bournemouth
Guidel (Les Kaolins)
Le Rozel
Isle of Wight - Compton
Plage du Sillon (St Malo)
Isle of Man
Les Donnants
East Wittering
Brighton - West Pier
Machrihanish
Portrush
Lahinch - Cornish Left
L'Aubraie
Bundoran - The Peak
Rossnowlagh
Strandhill
Birling Gap
Inch Reefs
Etretat
Brandon Bay
North Malin
Islay (Machir Bay)