Surf forecastStatisticsHistorical report

Florence seasonal overview

Best Surf Season (October - March)

The North Pacific flexes its muscle during these months, delivering a relentless onslaught of powerful, long-period swell generated by deep low-pressure systems rolling off the Aleutians. Average wave heights consistently surpass 2.5m, often pushing into the 3m+ range, with periods frequently topping 12 seconds. This is when Florence’s west-facing sandbars really light up, offering a mix of pumping beach-break barrels and rippable faces. The wildcard? Wind. While ideal offshore conditions (light easterlies) only clock in around 40-44% of the time during this window, the payoff is huge when a cold front clears the coast and sets up glassy mornings with XL NW groundswell.

Fair Surf Season (April - June)

As winter storms slowly wind down, the Pacific settles into a more transitional pattern. Swell heights drop to a still-solid 1.8-2.3m average, and periods shrink to the 10-11 second range. The dominant W to WNW swell train remains consistent, but the energy is less charged. Offshore wind percentages fall to 20-27%, meaning you'll have to pick your windows carefully. This is the season of fun-sized mornings and afternoon onshore chop – a great time for groveling on a groveler or logging when the tide drops.

Low Surf Season (July - September)

Summertime in Florence is a test of patience. The average wave height bottoms out around 1.5m, periods dip into the average 9-10 second range, and the swell direction shifts more northerly (NNW to NW). While the consistency is still there, the power and size are diminished. The wind picture is tricky: offshore flow is scarce (20-36%), and strong thermal gradients drive morning N winds that often turn NW and ruin the shape. Still, long-period south swells can sneak in, and when a summer tropical system spins up, those epic windows can emerge – but they're the exception, not the rule.

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Conditions at Florence in December

December: Peak Winter Power

December is the true peak of the North Pacific storm machine. Average swell height tops out at 3.1m – the highest of the year – with period averaging 12.7s. Swell direction is dominated by W (12.7%) and WNW (13.5%), but with a stronger NW (5.6%) and even some NW swell wrapping in. Wave heights frequently exceed 2.5m, with many days of XL to XXL surf. The wind patterns remain challenging: ideal wind is 43% thanks to frequent post-frontal N to NNE flow, but the S to SSW sector (24.2% combined) still spoils over half the days. However, the sheer power of the swell means even moderate wind can’t completely kill the waves. When a cold high settles in after a storm, December offers some of the most massive and charging conditions Florence sees all year.

Average Spot conditions at Florence 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 Florence 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 Florence for your next trip in December.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Florence 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 Florence.

Swell with good wind

Swell with good wind by size