Nazare - surf spot statistics

Nazaré, Portugal, is renowned for its massive waves, particularly during the winter months when powerful ground swells dominate. The best time for experienced surfers seeking large, clean waves is from November through February. During these months, ground swell prevalence is extremely high (77–92%), with mean swell sizes ranging from 2.2m to 2.5m. However, wind conditions are less favorable, with bad winds (onshore or cross-shore) occurring 60–64% of the time. Despite this, the sheer size and consistency of the swells make these months prime for big-wave surfing. From March to October, conditions become progressively less consistent, with a notable drop in ground swell dominance and smaller waves (1.4–2.2m). April to August sees the highest proportion of wind swells, which are generally less powerful and less desirable for Nazaré’s iconic surf. September and October offer a transition period with improving ground swells (47–66%) and slightly better wind conditions (39–40% good winds). While summer months (June–August) are less ideal for big waves, they may still attract surfers comfortable with smaller swells, though wind conditions remain mostly unfavorable. For serious surfers targeting Nazaré’s legendary waves, the winter season (November–February) is the peak window, despite the frequent onshore winds, as the raw power and size of the swells outweigh the wind drawbacks.

In September, Nazaré offers surfers a mix of manageable swells and variable wind conditions. The average swell height is 1.5m with a solid 10.6s period, indicating consistent, well-spaced waves that hold shape nicely. The majority of swells come from the NW-WNW quadrant (accounting for over 60% of waves in the 1-2.5m range), which aligns favorably with the spot’s exposure, providing clean, rideable walls. While bigger sets (2.5m+) are rare (less than 5% of occurrences), the bulk of waves fall in the 1-2.5m range—ideal for advanced surfers seeking powerful but not extreme conditions. Wind is a mixed bag: 39% of the time it’s favorable (light offshore or sideshore, predominantly N/NE), but stronger onshore winds (SSW-WNW) occasionally disrupt conditions, particularly when speeds exceed 20kph. Early mornings often see lighter winds, while afternoons can get choppy. Overall, September is a reliable month for quality surf, though wind management is key—dawn patrols or sessions during N/NE wind windows will yield the cleanest waves.