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Llangennith / Rhossili 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
80%
66%

14%

Jan
73%
57%

16%

Feb
66%
52%

14%

Mar
54%
30%

24%

Apr
44%
14%

30%

May
47%
8%

39%

Jun
35%
4%

31%

Jul
33%
3%

30%

Aug
50%
20%

30%

Sep
58%
29%

29%

Oct
62%
38%

24%

Nov
70%
51%

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
80%
Average Swell
Height
10ft
Average Swell
Period
12s
Dominant Wind
Dominant Swell
Feb
Swell
Consistency
73%
Average Swell
Height
9ft
Average Swell
Period
12s
Dominant Wind
Dominant Swell
Mar
Swell
Consistency
66%
Average Swell
Height
7ft
Average Swell
Period
11s
Dominant Wind
Dominant Swell
Apr
Swell
Consistency
54%
Average Swell
Height
5ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
May
Swell
Consistency
44%
Average Swell
Height
5ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Jun
Swell
Consistency
47%
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
33%
Average Swell
Height
4ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Sep
Swell
Consistency
50%
Average Swell
Height
5ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
Oct
Swell
Consistency
58%
Average Swell
Height
7ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
Nov
Swell
Consistency
62%
Average Swell
Height
8ft
Average Swell
Period
11s
Dominant Wind
Dominant Swell
Dec
Swell
Consistency
70%
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

Tenby South Beach
Putsborough
Croyde Beach
Aberavon
Manorbier
Porthcawl - Coney Beach
Freshwater West
Sandymouth
Bude - Crooklets
Widemouth Bay
Newgale
Borth / Ynyslas
Tywyn to Aberdovey
Whitesands Bay
Barmouth
Polzeath
Hells Mouth
Whitsand Bay
Harlyn
Constantine
Teignmouth
Exmouth
Mawgan Porth
Watergate Bay
Bantham
Lusty Glaze
Sidmouth (Lyme Bay)
Newquay - Towan / Great Western
Newquay - Fistral North
Perranporth (Droskyn)
Anglesey
Porthtowan
Lyme Regis
Falmouth
Gwithian
Praa Sands
Sennen
Dublin Area
Isle of Man
Bournemouth
Vazon Bay - Beach - Guernsey
Tramore - Strand
Trestaou
Le Dossen
Pors Ar Villec (Locquirec)
Isle of Wight - Compton
Lampaul Ploudalmezeau
Jersey
Le Rozel
Blancs-Sablons
East Wittering
Baie des Trépassés (Lescoff)
Plage du Sillon (St Malo)
La Torche
Guidel (Les Kaolins)
Machrihanish
Brighton - West Pier
Portrush
Les Donnants
Sunderland
Saltburn Beach
Birling Gap
Whitby
Islay (Machir Bay)
Scarborough - South Bay
Scarborough - North Bay
Belhaven Bay (Dunbar)
Cayton Bay - Pumphouse
Beadnell Bay
Pease Bay