Surf forecastStatisticsHistorical report

Chacahua seasonal overview

Best Surf Season (May - September)

As the North Pacific high-pressure system strengthens and the Intertropical Convergence Zone shifts north, Chacahua comes alive. The southern hemisphere's winter storm track pumps consistent, long-period groundswells from the S and SSW directly into our SSW-facing beach. With average wave heights hovering around 1.6m and periods stretching well into the 13-14 second range, the surf is consistently in the fun to pumping category. The real kicker? Offshore winds from the N, NNE, and NE are frequent, with ideal wind percentages climbing to 53-65%. This is prime time – expect clean, lined-up sets perfect for firing lefts and rights. The occasional tropical disturbance can add an extra boost, keeping the energy high throughout these months.

Fair Surf Season (April, October, November)

These transitional months offer a mixed bag but plenty of hidden gems. April sees the swell direction shifting from winter's ENE-E patterns to the more favorable S and SSW, with the average height reaching 1.5m and periods of 14.0s – some of the longest of the year. However, the wind is more fickle, with only 31% ideal in April, often plagued by afternoon onshores from the WSW and W. October and November offer a similar story: solid swell (1.3-1.5m, 12.7-13.3s) and improving wind consistency (57-62% ideal). These months are a surfer's gamble – when the offshore wind aligns with a strong S swell, the waves can be world-class. Be patient and pick your windows.

Low Surf Season (December - March)

Winter months bring a different character to Chacahua. The dominant swell shifts to easterly quadrants (ENE, E, ESE) as strong cold fronts and high-latitude storms track further north. While these swells can wrap in, they're often smaller (averaging 1.2-1.4m) and less consistent, with periods in the 11-13s range. The wind still blows favorably from the N and NW about 38-59% of the time, but the swell quality takes a hit. Expect more small, fun-sized days with occasional punchy sets from a long-period S pulse. It's not a write-off – dawn patrol can still deliver glassy conditions – but the energy is noticeably lower. This is the time for groveling and working on your cutbacks, not chasing bombs.

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Conditions at Chacahua in September

September: Transition with Power

September holds strong with an average height of 1.7m (peak of the year) and a period of 13.2s. Swell is heavily weighted toward S (22.4%) and SSW (56.8%), but SW (12.2%) and even some WSW (1.7%) add variety. The 1-2m range is plentiful. Ideal wind is still high at 55%, with offshore directions from N (6.8%), NNE (5.2%), NE (3.9%), and ENE (5.1%). Onshore winds from W (10.9%) and WNW (11.5%) increase compared to peak summer, so the afternoons can get bumpy. But mornings are magic: powerful, long-period groundswells with offshore texture. This month bridges summer consistency into the fall transition – expect some pumping days mixed with building windswell.

Average Spot conditions at Chacahua 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 Chacahua 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 Chacahua for your next trip in September.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Chacahua 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 Chacahua.

Swell with good wind

Swell with good wind by size