Playa Santa Teresa seasonal overview
Best Surf Season (December - February)
This is the sweet spot for Playa Santa Teresa. The North Pacific high-pressure system strengthens, funnelling consistent, dry offshore winds from the N-NNE quadrant across the Nicoya Peninsula. Swell from SSW and SW arrives with long, clean periods averaging 12-13 seconds, producing fun 1.0-1.5m waves with occasional bigger pulses. The result is clean, hollow, and rippable surf — classic Costa Rican dry-season perfection.
Fair Surf Season (March, April, November)
During these transition months, the trade winds begin to weaken or re-establish. March and April still see a solid SSW swell (up to 78% in March), with wave heights climbing slightly to 1.2-1.3m and periods remaining long (13-14s). However, the offshore wind window narrows — especially in April, when ideal conditions drop to 48%. November sees a similar pattern as the rainy season retreats: swell picks back up from SSW and SW, and the offshore flow returns with 51% favourable wind, making for good but less consistent surf.
Low Surf Season (May - October)
The Northern Hemisphere summer brings the Intertropical Convergence Zone (ITCZ) overhead, shifting winds to a southerly onshore flow. While this is the largest swell season in terms of raw power — average heights reach 1.4-1.5m and periods stay above 13s — the quality is severely compromised. S, SSW, and SW winds blow directly onshore, ruining shape and creating messy, choppy conditions. Ideal wind percentages drop to 31-42%, making clean sessions hit-or-miss. Only occasionally, when a strong high-pressure ridge pushes down from the north, can you score a few early-morning windows of offshore flow.
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Conditions at Playa Santa Teresa in December
December: Dependable Offshore Bliss
December brings the peak of the dry season and the highest percentage of ideal wind: 61%. Swell averages 1.1m at 12.5s, coming primarily from SSW (84.8%) and SW (12.0%). While wave heights are moderate (57.7% in the 1-1.5m range), the consistency and quality are unmatched. Offshore winds from N, NNE, and NE dominate (N: 12.0%, NNE: 20.5%, NE: 9.3%), creating smooth, glassy surfaces for hours each day. This is prime time for all skill levels — from longboard cruisers to shortboard rippers — to enjoy the best surf the year has to offer.
Average Spot conditions at Playa Santa Teresa in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Playa Santa Teresa 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 Playa Santa Teresa for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Playa Santa Teresa 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 Playa Santa Teresa.
