Costa da Caparica - surf spot statistics

Costa da Caparica in Portugal offers consistent surf conditions year-round, though the best months for surfers generally fall between October and March. During this period, ground swell dominates (74–91% of the time), providing cleaner, more powerful waves with mean swell sizes ranging from 1.5m to 2.1m. Winter months, particularly December to February, bring the largest swells (2.0m+), but wind conditions are less favorable, with bad winds occurring 62–64% of the time, often due to onshore winds from northerly or westerly systems. The shoulder seasons of October–November and March offer a good balance, with solid ground swell (63–84%) and slightly improved wind stats (35–36% good winds). April and September can still deliver decent sessions, though ground swell drops (46–64%) and wind conditions worsen (71–65% bad winds). From May to August, surf quality declines significantly—swell size drops below 1.3m, wind swell dominates (58–82%), and bad wind conditions peak (68–74%). While summer sees smaller, choppier waves, it can still be surfable for beginners or longboarders. For intermediate to advanced surfers seeking quality rides, the autumn and winter months are ideal despite wind challenges, while spring and summer are better suited for casual surfing in less demanding conditions.

December at Costa da Caparica offers decent surf conditions with an average swell height of 2.0m and a solid period of 12.5s, indicating powerful, well-spaced waves. The dominant swell directions are from the WNW, NW, and WSW, with the highest frequency of rideable waves (1.5m+) coming from these angles. The WNW swell delivers the most consistent size, often in the 1.5-2.5m range, ideal for intermediate to advanced surfers. Wind conditions are surfable 36% of the time, with lighter winds (under 20kph) most common from the NE, ENE, and N, which can groom the waves early in the day. However, stronger winds (>20kph) from the W, WNW, and NW occur frequently, creating choppier conditions. The best sessions will likely be during periods of WNW or SW swell with lighter offshore ENE winds—expect punchy beach breaks with some hollow sections. Windswell from the WSW or W can mix in, adding variability. Overall, December brings solid winter swells but demands flexibility due to wind volatility.