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Conditions at Cidreira in December
December: Summer Returns with Onshore Flow
December marks the return of the summer trade-wind regime. The average swell height drops to 5.2ft (1.6m), the period sits at 8.2s, and ideal wind is only 13% of the time. Swell energy is once again concentrated in the E/ENE quadrant: ENE (24.5%), E (18.6%), ESE (14.6%), SE (11.3%), SSE (9.9%) and S (8.3%). The wind rose is dominated by NE (23.8%) and ENE (22.0%), with E (9.3%) and ESE (6.5%) adding to the onshore/cross-shore flow. Offshore W/NW winds are scarce. Air temps average 22.4°C and water temp is 22.4°C, with rainfall near 4.0mm/day. There is always some surf on the beach, often around waist-to-shoulder high and often lumpy; the occasional dawn patrol with west/northwest offshore flow will be your best bet for a clean wave before the daily onshore wind takes over.
Average Spot conditions at Cidreira in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Cidreira during December. 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 Cidreira for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cidreira for December. 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 Cidreira.