Conditions at Tywyn in April
April: Smaller Swell, Better Wind Odds
April marks a clear step down in wave energy. Average swell height drops to 2ft (0.6m) and the average period falls to 7.6s. WSW remains the dominant swell source at 29.9 percent and SW follows at 22.7 percent, but the height distribution shifts dramatically: the vast majority of observations are now in the 0-1m range, with only about 4 percent reaching 5ft (1.5m) or more. For Tywyn, this means fun, grovelly waves rather than powerful winter bombs, and the shorter period adds a bumpy, less organized character.
The interesting shift is in the wind rose. April sees a high share of E and ENE winds, and the combined offshore sectors NE, ENE, E and ESE account for roughly 29 percent of all wind observations. Still, because the light-wind windows are limited, ideal surf conditions remain at just 7 percent. Air temperatures warm to 8.5°C, water temperatures start to climb to 9.6°C, and precipitation is lower at 2.22 mm/day, making spring a pleasant but less dependable surf season. Keep expectations low and grab any day when the easterly wind cleans up the small swell.
Average Spot conditions at Tywyn in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Tywyn 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 Tywyn for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Tywyn 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 Tywyn.