Surf forecastStatisticsHistorical report

Red Tree Reef seasonal overview

Best Surf Season (October - March)

The North Pacific roars to life during the autumn and winter months, delivering a sustained barrage of powerful, long-period groundswells to Red Tree Reef. Average swell heights climb above 2.5m, peaking at 3.0m in December, with periods consistently in the 11-12s range – that's the sweet spot for this west-facing reef. The dominant swell directions shift predominantly through the SW, WSW, and W quadrants, which align perfectly with the reef's optimal exposure. Offshore wind conditions are most reliable during this period, with ideal wind percentages hovering between 24% and 29%, often courtesy of high-pressure systems settling over the interior that pump clean ENE to SE breezes. When these ingredients combine, the reef fires, offering peaky, powerful waves that demand respect.

Fair Surf Season (April - May & September)

As the North Pacific storm track starts to weaken in spring, average swell heights drop to 2.2m in April and 1.7m in May, while periods shorten to around 10-11s. The swell energy is still present, but it becomes less consistent and more reliant on Southern Hemisphere pulses or late-season low-pressure systems. April sees the highest offshore wind frequency of the year at 30%, making it a prime month for clean, albeit smaller, conditions. September marks the transition back into winter, with average heights climbing back to 2.0m and periods picking up to 9.9s. While the swell is still building, the wind plays a trickier game – ideal conditions occur only 24% of the time, often requiring a careful eye on local pressure gradients.

Low Surf Season (June - August)

Summer slumps hard at Red Tree Reef. The North Pacific storm machine shuts down, leaving the reef relying on weak, distant Southern Hemisphere swells that arrive with less punch. Average swell heights bottom out at 1.3-1.4m, and periods dip to 9.8-10.2s – rideable but rarely exciting. The swell direction becomes heavily biased toward the SW and SSW, which, while still workable, doesn't bring the same juice as a solid W or WNW swell. To make matters worse, the wind is far from cooperative. Ideal offshore conditions fall to 21-23% of the time, with strong, persistent NW winds dominating a quarter of the days. The result is a summer of small, often choppy surf that is best suited for a longboard or a groveler when the occasional west wind swell aligns.

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Conditions at Red Tree Reef in December

December: Peak of the Pacific

December is the pinnacle of winter swell, with an average swell height of 3.0m and a period of 11.7s – the largest and most powerful of the year. Swell directions are a mix of SW (8.5%), WSW (10.3%), SSW (5.8%), and a notable W (3.8%) component. All of these are in the sweet spot for Red Tree Reef. The waves are big, raw, and demand respect. Wind conditions are similar to November, with 25% ideal offshore. The ESE and SE winds are the most common offshore players, often blowing at moderate to strong speeds. When the wind is clean, the reef offers some of the best waves of the year: long-period groundswells wrapping in with deep-water energy, breaking in thick, hollow barrels. It's a month for experienced surfers to charge, while others should heed the power of the North Pacific.

Average Spot conditions at Red Tree Reef 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 Red Tree Reef 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 Red Tree Reef for your next trip in December.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Red Tree Reef 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 Red Tree Reef.

Swell with good wind

Swell with good wind by size