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Conditions at Ansteys in April
April: The Autumn Turning Point
April is where Ansteys starts to turn from summer consistency into winter quality. Average wave height remains at 5-6ft (1.7m), but the average period ticks over to 10.0s, officially moving into the long-period range. The swell distribution shifts further south: SSE (20.0%), ESE (15.5%), SE (17.5%), and S (14.9%) dominate, while E still contributes 17.9%. A notable 5.2% of S-direction waves sit in the 6-8ft (2-2.5m) range, with a small percentage above 8ft (2.5m). This is the first month where real Southern Ocean groundswell regularly competes with local windswell.
Wind-wise, ideal conditions improve dramatically to 37%. NE and NNE still account for about 35%, and SSW at 16.2%, but the lighter W/NW/NNW sector becomes more active, especially after frontal passages. Onshore E/ESE/SE/SSE flow shrinks to around 9%. Water temperature cools to 24.5°C, air settles at 23.4°C, and daily rainfall drops to 2.19mm. An excellent recipe for dawn sessions with clean 4-6ft (1.2-1.8m) waves.
Average Spot conditions at Ansteys in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Ansteys during April. 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 Ansteys for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Ansteys for April. 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 Ansteys.