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Trestaou 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
84%
76%

8%

Jan
76%
64%

12%

Feb
73%
61%

12%

Mar
64%
38%

26%

Apr
56%
20%

36%

May
53%
12%

41%

Jun
45%
6%

39%

Jul
46%
6%

40%

Aug
62%
29%

33%

Sep
73%
43%

30%

Oct
73%
54%

19%

Nov
78%
63%

15%

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
84%
Average Swell
Height
10ft
Average Swell
Period
12s
Dominant Wind
Dominant Swell
Feb
Swell
Consistency
76%
Average Swell
Height
9ft
Average Swell
Period
12s
Dominant Wind
Dominant Swell
Mar
Swell
Consistency
73%
Average Swell
Height
7ft
Average Swell
Period
11s
Dominant Wind
Dominant Swell
Apr
Swell
Consistency
64%
Average Swell
Height
6ft
Average Swell
Period
11s
Dominant Wind
Dominant Swell
May
Swell
Consistency
56%
Average Swell
Height
5ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Jun
Swell
Consistency
53%
Average Swell
Height
4ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Jul
Swell
Consistency
45%
Average Swell
Height
4ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Aug
Swell
Consistency
46%
Average Swell
Height
4ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Sep
Swell
Consistency
62%
Average Swell
Height
5ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
Oct
Swell
Consistency
73%
Average Swell
Height
7ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
Nov
Swell
Consistency
73%
Average Swell
Height
8ft
Average Swell
Period
11s
Dominant Wind
Dominant Swell
Dec
Swell
Consistency
78%
Average Swell
Height
9ft
Average Swell
Period
12s
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

Le Dossen
Vazon Bay - Beach - Guernsey
Guidel (Les Kaolins)
Lampaul Ploudalmezeau
Jersey
La Torche
Blancs-Sablons
Plage du Sillon (St Malo)
Baie des Trépassés (Lescoff)
Les Donnants
Bantham
Whitsand Bay
Teignmouth
Le Rozel
Exmouth
Sidmouth (Lyme Bay)
Lyme Regis
Falmouth
Widemouth Bay
Watergate Bay
Lusty Glaze
Newquay - Towan / Great Western
Mawgan Porth
Polzeath
Perranporth (Droskyn)
Newquay - Fistral North
Bude - Crooklets
Harlyn
Porthtowan
Sandymouth
Constantine
Praa Sands
Gwithian
Croyde Beach
Putsborough
Bournemouth
Sennen
Porthcawl - Coney Beach
Isle of Wight - Compton
Aberavon
Langland Bay
L'Aubraie
Llangennith / Rhossili
Tenby South Beach
Manorbier
East Wittering
Freshwater West
Chassiron
Newgale
Whitesands Bay
Borth / Ynyslas
Etretat
Tywyn to Aberdovey
Brighton - West Pier
Barmouth
Soulac
Birling Gap
Hells Mouth
Lacanau
Anglesey
Biscarrosse-Plage
Dublin Area
Tramore - Strand
Mimizan-Plage
Contis-Plage
Cap de L'Homy
St-Girons Plage
El Brusco
Santander (El Sardinero)
Playa de Somo