Surf forecastStatisticsHistorical report

Puerto Sandino seasonal overview

Best Surf Season (May - November)

During these months, Puerto Sandino is consistently fed by long-period groundswell generated by powerful Southern Hemisphere storms. The dominant swell direction is from the S to SSW quadrant, perfectly aligned with the beach's SSW exposure. Average wave heights hover around 1.3m with periods in the 13-14 second range, delivering punchy, rippable waves. Offshore winds from the ENE are prevalent but generally lighter than in the dry season, thanks to a northward shift of the Intertropical Convergence Zone. This combination yields a high percentage of ridable, glassy conditions, making it the prime window for surf travel.

Fair Surf Season (April & December)

April and December serve as transitional months. April sees a slight uptick in swell height (1.2m) with excellent long periods (14.2s) and a very high percentage of optimal swell direction (over 90% from S/SSW). However, winds are a bit more variable, with some onshore flow creeping in. December brings the highest percentage of ideal wind conditions (71%) due to strong offshore trades, but average swell height drops to 1.0m and periods shorten to 12.5s, resulting in smaller but clean waves. Both months offer good sessions when the timing is right.

Low Surf Season (January - March)

The first quarter of the year is characterized by the peak of the Papagayo wind season. While the ENE trades blow strong and consistently offshore, their velocity often exceeds the sweet spot, creating bumpy surface conditions and reducing the 'ideal' wind percentage significantly (down to 42-53%). Swell heights average 1.0-1.1m with periods around 12-13 seconds, but the swell direction is more mixed, with a notable percentage from the E/ESE that does not wrap in as well. The result is a less consistent surf window, though occasional clean days can still deliver fun waves when the wind lightens.

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Conditions at Puerto Sandino in December

December: Clean and Smaller

December rounds out the year with the second-highest ideal wind (71%) but the smallest average swell (1.0m) and a period of 12.5s. The swell direction is more mixed compared to the middle of the year – S/SSW still dominates (67%), but there is a significant presence of SE/SSE/ESE swell (24%) from local windswell and distant storms. The ENE trades blow strong (20-30kph 17% of the time) but often light enough for clean conditions. While the waves are smaller, the quality is high when a long-period S pulse aligns with the offshore breeze. Perfect for grovelers and those who prefer smaller, cleaner waves.

Average Spot conditions at Puerto Sandino in December

Swell history for December

0 - 0.5
0.5 - 1
1 - 1.5
1.5 - 2.0
2.0 - 2.5
> 2.5 m

Wind history for December

0 - 10
10 - 20
20 - 30
30 - 40
40 - 50
> 50 km/h

Swell quality

Analyze the groundswell consistency at Puerto Sandino 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 Puerto Sandino for your next trip in December.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Puerto Sandino 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 Puerto Sandino.

Swell with good wind

Swell with good wind by size