Humewood Pier seasonal overview
Best Surf Season (December - March)
Summer in the Southern Hemisphere brings the highest percentage of offshore wind conditions at Humewood Pier, with ideal S-SSW breezes blowing clean across the NNE-facing beach nearly 28% of the time. While the average swell heights dip to a modest 1.9-2.0m, the long-period groundswells from the South and Southwest (10-11s) combine with light offshores to produce clean, rippable waves. Don't expect any direct N-NE swell – that's virtually absent – but the combination of glassy mornings and punchy 1-1.5m sets from the dominant SSW can still deliver fun, groomed peaks, especially when a passing cold front aligns the wind perfectly.
Fair Surf Season (April - May & September - November)
During the shoulder months, the balance shifts. Swell energy slowly ramps up in autumn (April and May) with average heights reaching 2.1-2.2m and periods stretching to 12s, but the frequency of ideal light offshore wind drops to 23-25%. Spring (September to November) sees a similar mix: average swell around 2.1-2.3m with 11-12s periods, and favorable wind only about 22-25% of the time. The dominant swell direction remains stubbornly from the SSW-SW, meaning the pier rarely sees optimal N-NE swell. However, on those days when a high-pressure system stalls offshore and delivers a steady south-westerly breeze, the mid-sized swell becomes clean, powerful, and eminently surfable.
Low Surf Season (June - August)
Winter is the most challenging period at Humewood Pier. The average wave heights increase to a solid 2.3-2.4m with long periods of 12.2-12.5s, indicating plenty of deep-ocean energy. Unfortunately, that's when the prevailing wind most often turns against the spot. The percentage of ideal S-SSW offshore wind plummets to 18-21%, while the onshore N-NE winds become more frequent and gusty, ruining wave quality. The swell direction remains locked in the SSW-SW quadrant, so even the bigger groundswells are often accompanied by cross or onshore winds, creating choppy, difficult conditions. The few good days come when a rare winter cold front delivers a short window of offshore flow; otherwise, it's a waiting game for the spring transition.
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Conditions at Humewood Pier in December
December: Summer Delight – Offshore Winds and Solid Swell
December returns to the summer pattern: average swell height 2.0m, period 10.7s, and ideal wind 28%. Swell is dominated by SSW (29%), SW (18%), and S (15%). The wind field is similar to January: east-northeast through east winds (ENE 9.2%, E 16.6%, ESE 10.7%) are common onshore flows, but when the wind goes south-southwest to west-southwest (combined 35% of the time), the pier enjoys clean offshore breezes. The best sessions occur in the early morning before the thermal gradient strengthens the easterly sea breeze. Despite the lack of optimal N-NE swell, the consistent south-southwest groundswell of 1-2m, groomed by a light offshore, creates fun, ripable waves that make December one of the most reliable months for a good surf at Humewood Pier.
Average Spot conditions at Humewood Pier in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Humewood Pier 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 Humewood Pier for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Humewood Pier 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 Humewood Pier.
