Surf forecastStatisticsHistorical report

Costa Azul seasonal overview

Best Surf Season (April - July)

As the Northern Hemisphere spring sets in, Costa Azul hits its prime. The Pacific high tightens its grip, ushering in consistent offshore breezes from the west to northwest—perfect for grooming the predominant south swell that travels thousands of miles from the Southern Ocean. Average wave heights climb to a fun 1.0-1.2m, while periods hover in the powerful 13-14 second range, yielding punchy, well-shaped waves that reel down the beach. This is the sweet spot where swell size, wind quality, and water temps align for peak surfability.

Fair Surf Season (March, August - October)

The shoulder months still offer plenty of waves, but conditions become more variable. March sees a rise in long-period swell as the South Pacific gears up, but winds can be a tick more inconsistent. Late summer into early fall (Aug-Oct) holds onto solid south swell energy (1.1-1.2m averages) but the trade wind influence begins to creep in, decreasing the percentage of offshore wind days. You'll still score clean sessions, especially in August, but expect more mixed conditions with occasional onshore slop.

Low Surf Season (November - February)

Winter brings a shift in the swell window. While the Southern Hemisphere is still active, the dominant storm tracks weaken, and the average swell height drops to 0.8m. More importantly, the region becomes susceptible to northerly swell from mid-latitude fronts, which doesn't wrap as efficiently into the east-southeast facing beach. Wind patterns are less reliable, with the percentage of ideal offshore wind falling to 69-73%. The result: smaller, less consistent surf with a higher chance of onshore wind ruining the session. However, when a solid south swell sneaks in under a high-pressure ridge, the few days of fun-sized, groomed waves make it worthwhile.

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Conditions at Costa Azul in September

September: Tropical Swells Mix In, Consistency Holds

September maintains an average height of 1.2m and a period of 12.6 seconds. The S and SSW swell combination still accounts for 91% of the total, but there is a notable increase in SSE swell (6%) and even a touch of SE (0.6%). This is the month when the Eastern Pacific hurricane season can inject steep, short-period tropical swell from the south and southeast. The 1-1.5m range still dominates, but the 1.5-2.5m range accounts for about 6% of the total, offering bigger, more powerful sets. Wind ideal conditions drop to 70% – the same as January. Onshore wind patterns become more frequent: SE (5%), SSE (5%), S (6%), and SW (8%) all contribute to the onshore breeze. The offshore flow (WNW 20%, W 16%, NW 9%) is still present but less dominant. The best days come when a large tropical depression or hurricane south of Baja sends a clean, long-period south swell and a cold front or high-pressure system pushes offshore winds. These are the days when Costa Azul can see rare overhead sets with light offshores.

Average Spot conditions at Costa Azul in September

Swell history for September

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

Wind history for September

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

Swell quality

Analyze the groundswell consistency at Costa Azul during September. 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 Costa Azul for your next trip in September.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Costa Azul for September. 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 Costa Azul.

Swell with good wind

Swell with good wind by size