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Conditions at Mount Maunganui in December
December: Summer Returns in Full Force
December brings the official start of summer and a rapid return to NE-dominated surf. The optimal swell window jumps to 59.9 percent, with NE contributing a huge 27.7 percent and NNE 17.0 percent, while the average period lengthens to 8.6s, producing a much more user-friendly, punchy wave than the spring transition. Average height is 1.1m (3-4ft), and the bulk of the surf sits in that clean 0.5-1m and 1-1.5m range. The trade-off is wind: ideal offshore frequency is only 39 percent, and the NNE/NE seabreeze regime begins to dominate the afternoons as warm air at 17.9°C heats the landmass. Water temperature warms to 17.7°C, making dawn patrol in boardies or a springsuit the norm. December is a great month for running down the beach and catching fun, rippable waves, but the early morning session will always deliver the best quality.
Average Spot conditions at Mount Maunganui in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Mount Maunganui 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 Mount Maunganui for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Mount Maunganui 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 Mount Maunganui.