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Conditions at Johanna in April
April: The Window Sharpens
April is where Johanna's calendar starts to get really good. Average swell height holds at 8ft (2.5m), while the period jumps to 12.7s, giving the waves noticeably more power and groomed, lined-up faces. The directional spread is even healthier - SW 30.8%, WSW 13.1%, SSW 8.4% - and a broader spread of west in the spectrum means the beach is catching more of the open-ocean energy. The 1.5-2.5m (5-8ft) range remains the bread and butter, but the 8ft+ share starts to grow.
Wind is where the month really shines: ideal conditions climb to 33%, the N through ENE offshore quadrant now represents about 18% of the wind rose, and the afternoon S/SW onshore flow is weaker and less frequent. The result is longer sessions of clean, powerful surf. Water temp is still a user-friendly 16.9°C, average air temp 15.5°C, and rain increases slightly to 2.18 mm/day - a small price for the best consistency of the year.
Average Spot conditions at Johanna in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Johanna 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 Johanna for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Johanna 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 Johanna.