Surf forecastStatisticsHistorical report

Pilar seasonal overview

Best Surf Season (October - March)

The Philippine Sea awakens during the Northern Hemisphere's winter as the Northeast Monsoon (Amihan) drives consistent, powerful swell from the NE to E. Average wave heights climb to 1.3m–1.7m, with periods often hitting 9.5–10.2s, delivering punchy, rideable waves with occasional long-period gems. However, the monsoon also brings strong onshore winds from the NE and ENE, limiting clean conditions to brief windows when the wind shifts offshore from the SW to WNW. Despite the low ideal wind percentages (1–4% in Dec-Feb), the combination of size and the rare offshore day can produce firing conditions, especially in October and November when the wind still offers more frequent relief. This is the window for serious swell chasers.

Fair Surf Season (April - June)

As the monsoon weakens, the swell energy drops to an average of 0.7–1.1m, with periods settling around 8.5–9.4s – still fun and punchy, but less powerful. The wind regime shifts: the dominant flow becomes more variable with an increasing influence of southerly and westerly components. The percentage of ideal (offshore) wind climbs from 4% in April to 20% in June, making for more frequent clean surf sessions, even on smaller days. This is the season for fun-sized waves on a groveling board, best scored when a distant typhoon sends a pulse into the region.

Low Surf Season (July - September)

The Southwest Monsoon (Habagat) takes hold, and the swell drops to a typical 0.7–0.8m, with periods ranging 8.4–9.5s – often choppy and messy from local windswell. However, this is also the period with the highest frequency of offshore winds (32–43%), thanks to steady westerly breezes from the SW to WNW. Micro to small waves dominate, but when a typhoon to the northeast generates a longer-period wrap, you can score clean, peaky waves with minimal crowds. It's a low-surf season in terms of size, but the best odds for glassy, rideable conditions if you're willing to hunt for the occasional pulse.

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Conditions at Pilar in May

May: Summer Begins

May sees a further drop in swell energy to an average of 0.8m (period 9.1s). The dominant swell direction is still the ENE (66.7%), but a notable increase in smaller, shorter-period energy from the E (14.4%) appears. Waves predominantly stay in the 0.5–1m range – fun-sized, groveling territory. The wind regime undergoes a major change: offshore winds from the SW-WNW now occur 12% of the time, a significant jump. Easterly and southeasterly winds still blow often, but they are lighter (mostly under 20 kph). This month gives you the first taste of reliable clean conditions, especially in the mornings when a light westerly breeze cleans up the surface. A log or a groveler will be your best friend, but occasional pulses from distant storms can still produce a peaky 1m wave.

Average Spot conditions at Pilar in May

Swell history for May

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

Wind history for May

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

Swell quality

Analyze the groundswell consistency at Pilar during May. 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 Pilar for your next trip in May.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Pilar for May. 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 Pilar.

Swell with good wind

Swell with good wind by size