Surf forecastStatisticsHistorical report

Campelo seasonal overview

Best Surf Season (October - March)

The North Atlantic powers up in autumn, delivering consistent, long-period swell from the NW to WNW quadrant throughout these months. Average wave heights range from 2.6m in March to a peak of 3.0m in January, with periods averaging 12-13s – that's powerful, lined-up groundswell. The wind is favorable 30-35% of the time, often from the SW to S quadrants, creating clean offshore conditions at Campelo's NW-facing beach. Cold fronts and low-pressure systems track across the Atlantic, providing a non-stop conveyor belt of quality surf. This is the prime window for serious size and shape.

Fair Surf Season (April and September)

Transition months see a decline in average swell energy as the jet stream shifts north. In April, the average swell drops to 2.1m at 10.9s, while September sees 1.7m at 10.4s. These months still offer fun, rippable waves with a good chance of offshore winds (27-31% ideal). Swell directions remain predominately NW-WNW, but with less consistency. April can still see solid pulses from late-season storms, while September marks the beginning of the autumn ramp-up. Expect a mix of clean, punchy days and smaller, weaker periods.

Low Surf Season (May - August)

Summer settles in with the smallest average swell of the year. Heights dip to 1.3m in July and periods shorten to 8.8-10.0s, resulting in less powerful, often crumbly waves. The wind is ideal only 18-26% of the time, with the persistent NE trade winds blowing across the coast – these are onshore or cross-shore, messing up the wave quality. Though the NW swell window remains active, the energy is lower and the window for clean conditions narrows. Surfable days exist but require careful timing of the southerly breezes.

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Conditions at Campelo in September

September: Autumn Stirrings

September marks a clear shift toward better surf. Average swell rises to 1.7m and period to 10.4s – back into puncy, rideable to powerful territory. Swell directions still favor NW (27.3%), WNW (20.3%), and NNW (16.7%), but size increases, with more waves in the 1-2.5m range. Ideal wind jumps to 31%. NE winds (14.5%) still appear, but offshore flow from SSW (8.4%) and SW (7.7%) becomes more reliable. September often delivers the first true groundswell of the season, with the North Atlantic waking up after summer slumber.

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

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Campelo 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 Campelo.

Swell with good wind

Swell with good wind by size