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Sennen 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
90%
78%

12%

Jan
81%
67%

14%

Feb
81%
64%

17%

Mar
74%
43%

31%

Apr
66%
22%

44%

May
67%
12%

55%

Jun
60%
8%

52%

Jul
58%
7%

51%

Aug
68%
30%

38%

Sep
76%
41%

35%

Oct
80%
54%

26%

Nov
82%
62%

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
90%
Average Swell
Height
14ft
Average Swell
Period
12s
Dominant Wind
Dominant Swell
Feb
Swell
Consistency
81%
Average Swell
Height
12ft
Average Swell
Period
12s
Dominant Wind
Dominant Swell
Mar
Swell
Consistency
81%
Average Swell
Height
10ft
Average Swell
Period
11s
Dominant Wind
Dominant Swell
Apr
Swell
Consistency
74%
Average Swell
Height
8ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
May
Swell
Consistency
66%
Average Swell
Height
7ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Jun
Swell
Consistency
67%
Average Swell
Height
6ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Jul
Swell
Consistency
60%
Average Swell
Height
5ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Aug
Swell
Consistency
58%
Average Swell
Height
5ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Sep
Swell
Consistency
68%
Average Swell
Height
7ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
Oct
Swell
Consistency
76%
Average Swell
Height
10ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
Nov
Swell
Consistency
80%
Average Swell
Height
11ft
Average Swell
Period
11s
Dominant Wind
Dominant Swell
Dec
Swell
Consistency
82%
Average Swell
Height
12ft
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

Porthmeor
Praa Sands
Gwithian
Godrevy
Porthleven
Portreath - Beach
Porthtowan
Chapel Porth
St Agnes
Perranporth (Droskyn)
Penhale (Perran Sands)
Falmouth
Holywell Bay
Crantock
Newquay - Fistral South
Newquay - Fistral North
Newquay - Cribbar
Newquay- Little Fistral
Newquay - Towan / Great Western
Newquay - Tolcarne Wedge
Lusty Glaze
Newquay - Porth
Whipsiderry
Watergate Bay
Mawgan Porth
Treyarnon
Constantine
Harlyn
Polzeath
Pentewan
Trebarwith strand
Crackington Haven
Widemouth Bay
Bude - Crooklets
Bude - Summerleaze
Sandymouth
Whitsand Bay
Wembury
Freshwater West
Westward Ho!
Croyde Beach
Saunton Sands
Manorbier
Challaborough
Penfoul
Putsborough
Bantham
Lampaul Ploudalmezeau
St Pabu
Woolacombe
Newgale
Whitesands Bay
Le Gouerou
Tenby South Beach
Abereiddy
Boutrouilles
Blancs-Sablons
Porsmilin
Dalbosc
Rhossili
Le Petit Minou
Llangennith
Les Amiets
Anse de Pen-hat
La Mauvaise Grève
Le Dossen
Kerloch
Pointe de Dinan
Paignton
Hunts Bay