Medewi seasonal overview
Best Surf Season (October - March)
The heart of the wet season brings the NW Monsoon to life, and for Medewi, that means a dramatic swing toward offshore wind conditions. With the wind blowing from the north through east-northeast a significant portion of the time, the wave face stays clean and the long-period groundswells from the SSW and SW wrap beautifully into the bay. Average swell heights hover in the 1.0 to 1.2m range, but the 12-14 second periods give them real punch. February and March shine brightest – the wind is ideal nearly 40% of the month, and the swell direction is locked in. This is when you can count on rippable, classic Medewi lefts with minimal chop.
Fair Surf Season (April - May & September)
As the monsoon transitions, the trade winds begin to build from the southeast, but the swell quality can still be solid. April and May see average swell heights climb to 1.1-1.2m and periods pushing 13-14 seconds, driven by deepening Southern Ocean lows. The catch: the wind starts clocking around to the ESE and SE more frequently, turning the lineup choppy and sideshore. However, the percentage of offshore wind (from the north) remains around 30-35%, so if you pick your windows, you can score fun, powerful waves before the onshore fog sets in. September offers a similar story – the swell is still pumping but the wind is ideal only 11% of the time, making it a gamble for the dedicated.
Low Surf Season (June - August)
The SE trade wind season hits full stride from June through August, and conditions at Medewi become a battle. While the average swell height peaks at 1.3-1.4m with 14-second periods – some of the most powerful swells of the year – the wind blows from the ESE and SE over 80% of the time. That puts the breeze directly onshore for this south-southwest-facing beach, creating choppy, bumpy faces that are tough to surf. The percentage of ideal offshore wind plummets to just 14-18%. When a rare northernly wind does align, the waves can be epic, but those days are few and far between. Overall, this is the most challenging period for consistently good surf.
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Conditions at Medewi in December
December: Monsoon Peak, Classic Medewi
December is the heart of the wet season and delivers classic Medewi conditions. The NW Monsoon is fully established, bringing frequent offshore winds from the N through ENE. The wind ideal percentage is 18%, but the dominant wind directions are actually from the W (18.4%), WSW (15.3%), and SW (10.4%) – these are onshore, yet light to moderate. The northerly components (N, NNE, NE, ENE) total over 7%, which is significant. Swell direction is SSW (85.8%) and SW (13.3%), with average height 1.0m and period 12.4 seconds. The 0.5-1m range is 51.4%, but 1-1.5m is 45.4%, and there are occasional 1.5-2m sets (1.5% from SW). December offers consistent, clean, fun waves with plenty of corners to carve. It's the perfect month for intermediate to advanced surfers.
Average Spot conditions at Medewi in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Medewi 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 Medewi for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Medewi 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 Medewi.
