Surf forecastStatisticsHistorical report

Los Locos seasonal overview

Best Surf Season (October - March)

The North Atlantic roars to life during these months, delivering consistent, powerful WNW to NW groundswells that wrap perfectly into Los Locos' west-north-west exposure. Average wave heights hover between 1.8m and 2.1m, with long periods averaging 11.9 to 12.9 seconds, offering pumping, heavy conditions when the wind aligns. Offshore flow from the south quadrant (SSW, SW, WSW) is most frequent, blowing clean and groomed lines onto the reef. Strong extratropical cyclones dominate the storm track, sometimes producing XXL swells over 2.5m, but the trade-off is occasional onshore W to NW winds that can shut the place down. When high pressure sets up over the Bay of Biscay, you get that magic combo: long-period swell, sunny skies, and light offshore breezes.

Fair Surf Season (April & September)

Transition months bring a notable drop in average swell energy. April sees heights around 1.5m and periods dipping to 10.8s, while September rebounds slightly to 1.3m and 10.4s. The wind is ideal 43-48% of the time, often from the east through south, but the swell window is still dominated by NW direction. Waves become fun and rippable in the 1-1.5m range, with occasional solid days reaching 2m. The storm track is less active, so you rely on more distant low-pressure systems or early-season hurricanes in September. Consistent but not consistently firing.

Low Surf Season (May - August)

Summer months are a struggle for swell at Los Locos. Average heights sit at 1.0-1.2m, with periods averaging 8.9-10.0s – often small, groveling conditions. The dominant swell remains NW, but at reduced energy: most waves fall in the 0.5-1m range. Thermal low-pressure systems over the Iberian Peninsula drive afternoon sea breezes from the W and NW, which are directly onshore and ruin the wave quality. Offshore wind opportunities still exist, especially in the mornings from the E to SE quadrants (ideal wind around 40-44% of the time), but the lack of swell size and period makes for marginal sessions. It's a time for longboard fun or exploring other coastlines – only the occasional distant Southern Hemisphere swell can juice things up, but those are rare.

Loading chart...

Conditions at Los Locos in December

December: Peak Winter Groundswell

Average height 2.0m, period 12.5s – pumping and heavy are the keywords. Swell directions are split between NW (35.6%), WNW (19.6%), and NNW (12.2%) – all optimal. The 1.5-2.5m range covers 34% of swell, with over 10% exceeding 2.5m. Ideal wind is 52%, tied with October for the highest. South quadrant winds (S, SSW, SW) total 28.6%, delivering clean offshore flow. W and WNW onshore winds are 22.1% – still a spoiler, but less frequent. December is the height of winter in the North Atlantic; expect relentless, powerful groundswells from strong lows. When the wind aligns, Los Locos offers world-class, barreling waves. This is the month to plan a trip.

Average Spot conditions at Los Locos in December

Swell history for December

0 - 0.5
0.5 - 1
1 - 1.5
1.5 - 2.0
2.0 - 2.5
> 2.5 m

Wind history for December

0 - 10
10 - 20
20 - 30
30 - 40
40 - 50
> 50 km/h

Swell quality

Analyze the groundswell consistency at Los Locos during December. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Los Locos for your next trip in December.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Los Locos for December. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Los Locos.

Swell with good wind

Swell with good wind by size