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Castle Island ratings
Quality on a good day: 4.0
Consistency of Surf: 1.0
Difficulty Level: 3.0
Crowds: 3.0

Overall: 3.2

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Castle Island Wind Stats

Wind Stats

(% offshore)
Castle island.wind.statistics.aprilSw.animatedSw.label.animated

All Swells

(any wind direction)

This picture describes how frequently and how strongly the wind blows from different directions through a typical April. The largest spokes point in the directions the wind most commonly blows from and the shade of blue suggests the strength, with the darkest shade of blue strongest. It is based on 3360 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Castle Island, located 24 km away (15 miles). There are insufficient recording stations world wide to use actual wind data. Invevitably some coastal places have very localized wind effects that would not be predicted by NWW3. According to the model, the most common wind at Castle Island blows from the SW. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Castle Island. Converseley, dominant spokes illustrate favoured directions, and the more dark blue, the stronger the wind. Spokes point in the direction the wind blows from. Over an average April, the model suggests that winds are light enough for the sea to be glassy (light blue) about 0.4% of the time (0 days each April) and blows offshore just 6% of the time (2 days in an average April). During a typical April winds stronger than >40kph (25mph) are expected on 2 days at Castle Island

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