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Conditions at North Narrabeen in December
December: Summer Grovel Season
December closes the year with the smallest average swell height of the calendar at 5ft (1.5m) and a short-period average of 8.3s. The swell direction distribution remains dominated by E, ESE, SE and SSE, with SSE at 18.3%, SE at 15.1%, E at 13.5% and ESE at 13.1%, but the energy is concentrated in the 1-2m range rather than long-period groundswell. NE at 14.5%, ENE at 11.0% and SSE/S winds keep the sea breeze engine running, and ideal W/NW/NNW wind drops to 20%. Water temp warms to 21.5°C, air temp averages 21.6°C, and precipitation is 2.68 mm/day. It is a good time for a funboard or a high-volume shortboard, but the famous North Narrabeen bowls will need to wait for a proper winter groundswell or a strong southerly change.
Average Spot conditions at North Narrabeen in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at North Narrabeen 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 North Narrabeen for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at North Narrabeen 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 North Narrabeen.