Conditions at Porto Katsiki in December
December: Winter Crest and Storm Swell
December sits at the winter crest. The average swell height equals January's seasonal max at 3.3ft (1.0m), the average period holds at 5.5s, and ideal offshore wind is 17% of the time, the second highest of the year. The S/SSW/SW window accounts for 24.7% of the directional energy, led by SW (10.8%) and SSW (7.5%). As winter lows intensify across the Western and Central Mediterranean, the mix of WSW (11.6%), W (6.4%) and NW (19.4%) swells becomes more powerful, but the persistent short periods mean much of this is still localized sea energy. The good news is that cold fronts track through regularly, swinging winds to the offshore quadrant and setting up workable, short-period 3-4ft (0.9-1.2m) surf. Water temperature drops to 18.0°C, air temperature to 13.8°C, and precipitation is the wettest of the year at 4.61mm/day. A pre-Christmas storm under a northerly blast can produce some of the most solid and consistent conditions Porto Katsiki sees all year.
Average Spot conditions at Porto Katsiki in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Porto Katsiki 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 Porto Katsiki for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Porto Katsiki 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 Porto Katsiki.