Aramoana Spit Wind Statistics, Autumn averages since 2006
The graph describes how commonly and how strongly the wind blows from different directions over a normal southern hemisphere autumn. The longest spokes point in the directions the wind most commonly blows from and the shade of blue indicates the strength, with the darkest shade of blue showing the strongest winds. It is based on 6580 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Aramoana Spit, located 29 km away (18 miles). There are insufficient recording stations world wide to use actual wind data. Without question some coastal places have very localized wind effects that would not be predicted by NWW3.
According to the model, the most common wind at Aramoana Spit blows from the ENE. If the rose diagram shows a close to circular outline, it means there is no strong bias in wind direction at Aramoana Spit. By contrast, dominant spokes show favoured directions, and the more dark blue, the stronger the wind. Spokes point in the direction the wind blows from. During a typical southern hemisphere autumn, the model suggests that winds are light enough for the sea to be glassy (pale blue) about 3% of the time (3 days each southern hemisphere autumn) and blows offshore just 9% of the time (5 days in an average southern hemisphere autumn). Over an average southern hemisphere autumn wind stronger than >40kph (25mph) was forecast for only a single days at Aramoana Spit
IMPORTANT: Beta version feature! Swell heights are open water values from NWW3. There is no attempt to model near-shore effects. Coastal wave heights will generally be less, especially if the break does not have unobstructed exposure to the open ocean.