Conditions at Periscopes in December
December: The Monsoon Returns
December sees the northwest monsoon reclaim control of the region. Ideal wind crashes to 19%, and the wind rose is dominated by WSW (16.2%), SW (16.5%), SSW (13.0%) and W (10.2%), which are wrong directions for a west-facing lineup. That onshore flow degrades the surf even though the swell is still present. SSW (35.7%) and SW (63.0%) swells hold the average at 1.3m (4ft) with a 12.9s period, and the peak height distribution still includes a decent slice of 1.5-2m (5-6ft) waves. But without clean wind, the lineup is often lumpy and less enjoyable. Wet-season rainfall ramps up to 6.71mm/day, air temps hover near 27.9°C, and water temp is 29.7°C. December is for the die-hards who can work around the weather windows.
Average Spot conditions at Periscopes in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Periscopes 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 Periscopes for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Periscopes 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 Periscopes.