Conditions at Carcavelos in October
October: The Atlantic Roars Back
October is when the North Atlantic wakes up, and Carcavelos is on the front line. Average swell height jumps to 1.9m (6ft) and period lengthens to 11.4 seconds. The Waverose is still dominated by NW (34.0%) and WNW (21.1%), with NNW at 14.4% and W at 7.9%. More importantly, the S/SSW/SW/WSW sector gains ground - the first true autumn low-pressure systems begin sending swell from more southerly angles. On a SSW-facing beach, that is a big deal: a 2-2.5m (6.5-8ft) SW groundswell with N/NE offshore wind will wrap into the bay and offer the first proper waves since spring.
Wind regime becomes more mixed. NNW drops to 24.4%, while N (7.2%), NNE (6.8%) and NW (7.7%) provide frequent clean windows. The ideal wind sits at 47%. Air temps are still mild at 18.3°C, water is warm at 18.4°C, and rainfall increases to 2.49 mm/day as fronts return. The combination of warm water, building swell and improving winds makes October one of the best months of the year to score Carcavelos at size.
Average Spot conditions at Carcavelos in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Carcavelos during October. 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 Carcavelos for your next trip in October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Carcavelos for October. 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 Carcavelos.