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Chassiron 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
73%
66%

7%

Jan
56%
47%

9%

Feb
54%
45%

9%

Mar
45%
28%

17%

Apr
29%
14%

15%

May
24%
8%

16%

Jun
14%
3%

11%

Jul
14%
2%

12%

Aug
30%
16%

14%

Sep
51%
32%

19%

Oct
53%
39%

14%

Nov
57%
46%

11%

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
73%
Average Swell
Height
7ft
Average Swell
Period
12s
Dominant Wind
Dominant Swell
Feb
Swell
Consistency
56%
Average Swell
Height
5ft
Average Swell
Period
12s
Dominant Wind
Dominant Swell
Mar
Swell
Consistency
54%
Average Swell
Height
5ft
Average Swell
Period
12s
Dominant Wind
Dominant Swell
Apr
Swell
Consistency
45%
Average Swell
Height
5ft
Average Swell
Period
11s
Dominant Wind
Dominant Swell
May
Swell
Consistency
29%
Average Swell
Height
3ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
Jun
Swell
Consistency
24%
Average Swell
Height
3ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Jul
Swell
Consistency
14%
Average Swell
Height
3ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Aug
Swell
Consistency
14%
Average Swell
Height
3ft
Average Swell
Period
9s
Dominant Wind
Dominant Swell
Sep
Swell
Consistency
30%
Average Swell
Height
3ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
Oct
Swell
Consistency
51%
Average Swell
Height
5ft
Average Swell
Period
10s
Dominant Wind
Dominant Swell
Nov
Swell
Consistency
53%
Average Swell
Height
6ft
Average Swell
Period
11s
Dominant Wind
Dominant Swell
Dec
Swell
Consistency
57%
Average Swell
Height
6ft
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

St-Denis
Les Boulassiers
Gouillaud
Le Lizay
Les Allassins
St-Trojan
Les Conches/Bud Bud
La Côte Sauvage
Saint-Nicolas
Pontaillac
Les Sables-d'Olonne
Le Verdon
Soulac
L'Aubraie
L'Amelie
Sauveterre
Le Gurp
Les Dunes
Montalivet
La Sauzaie
Le Pin Sec
Saint Gilles Croix de Vie
Hourtin
Le Crohot des Cavales
St jean de monts
Carcans
Lacanau
Le Porge
Noirmoutier
La Jenny
Le Grand Crohot
Le Truc Vert
Gohaud
L'Ermitage
L'Horizon
La Pointe
La Courance
La Salie
Biscarrosse-Plage
Mimizan-Plage
Lespecier
Contis-Plage
Cap de L'Homy
St-Girons Plage
Moliets Plage
Les Donnants
Messanges
Vieux Boucau
La Côte Sauvage
Penthièvre
Casernes
Le Penon
Les Bourdaines
Les Estagnots
Les Culs Nus
Hossegor (La Graviere)
Hossegor (La Nord)
Hossegor (La Sud)
L'Estacade
Le Prevent
Etel
Le Santocha
Capbreton (La Piste/VVF)
Labenne-Ocean
Ondres Plage
Tarnos
Gavres
La Barre
Les Cavaliers
La Madrague