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Sidmouth (Lyme Bay) 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
70%
57%

13%

Jan
60%
46%

14%

Feb
55%
44%

11%

Mar
45%
25%

20%

Apr
37%
11%

26%

May
35%
8%

27%

Jun
25%
3%

22%

Jul
23%
2%

21%

Aug
39%
18%

21%

Sep
51%
25%

26%

Oct
52%
34%

18%

Nov
62%
42%

20%

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
70%
Average Swell
Height
8ft
Average Swell
Period
12s
Dominant Wind
Dominant Swell
Feb
Swell
Consistency
60%
Average Swell
Height
7ft
Average Swell
Period
12s
Dominant Wind
Dominant Swell
Mar
Swell
Consistency
55%
Average Swell
Height
6ft
Average Swell
Period
11s
Dominant Wind
Dominant Swell
Apr
Swell
Consistency
45%
Average Swell
Height
5ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
May
Swell
Consistency
37%
Average Swell
Height
4ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Jun
Swell
Consistency
35%
Average Swell
Height
4ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Jul
Swell
Consistency
25%
Average Swell
Height
3ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Aug
Swell
Consistency
23%
Average Swell
Height
3ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Sep
Swell
Consistency
39%
Average Swell
Height
4ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
Oct
Swell
Consistency
51%
Average Swell
Height
7ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
Nov
Swell
Consistency
52%
Average Swell
Height
7ft
Average Swell
Period
11s
Dominant Wind
Dominant Swell
Dec
Swell
Consistency
62%
Average Swell
Height
8ft
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

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