Surf forecastStatisticsHistorical report

Horseshoe seasonal overview

Best Surf Season (June - September)

During the southwest monsoon, the Philippines enter a period of more consistent offshore winds for east-facing spots. The average wave heights drop to a modest 0.7–0.8 m, but the key here is quality over quantity. The monsoon trough pumps warm, moist air from the southwest, generating light to moderate westerly breezes that groom the small, fun-sized swell. Periods hover around 8.5–9.5 s, giving the waves just enough punch for groveling and high-performance surfing. While the swell is rarely pumping, the clean surface conditions make these months the most surfable at Horseshoe.

Fair Surf Season (May & October)

These transitional months represent a tug-of-war between the retreating NE monsoon and the advancing SW monsoon. May sees a rise in ideal wind percentages (12%) as the trades weaken, while October enjoys a bump in average period to 10.2 s and a healthy 35% offshore frequency. Swell heights sit around 1.1 m, delivering a mix of rideable small waves and occasional bigger sets. The window is shorter, but when the synoptic setup aligns, you can score clean, rippable waves with fewer crowds.

Low Surf Season (November - April)

The northeast monsoon dominates from November through April, bringing a persistent stream of powerful NE swell. Average heights range from 1.3 m in November to 1.7 m in January, with periods in the 9.5–10 s range. Unfortunately, the same monsoon that delivers the size also drives strong, steady ENE to NE winds that are directly onshore at Horseshoe. Ideal wind percentages plummet to 1–5%, meaning the ocean is often a messy, choppy mess. While the occasional cold-front or typhoon passage can briefly align conditions, consistency is poor. This season is best suited for wave-starved chargers willing to gamble on a fleeting wind shift.

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Conditions at Horseshoe in September

September: Transitional Power

September bridges the summer and fall patterns with ideal wind percentages remaining strong at 42%. The average swell height rises to 0.8 m and the period jumps to 9.5 s, indicating the return of longer-period energy. Swell directions become more varied: NE (27.1%) and ENE (22.7%) reclaim dominance, but westerly directions (W, WNW, SW) still contribute. Wind patterns shift: westerlies (W, WNW, WSW) account for 35% of the time, and easterly trades start to strengthen. The result is excellent clean conditions with increasing wave size and power. The waves in the 1–1.5 m range become rippable and fun, marking September as a hidden gem.

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

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Horseshoe 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 Horseshoe.

Swell with good wind

Swell with good wind by size