Rock Wave Wind Statistics, December averages since 2006
This picture shows how commonly and how strongly the wind blows from different directions through a typical December. The longest spokes point in the directions the wind most commonly blows from and the shade of blue indicates the strength, with the strongest winds shown by dark blue. It is based on 1736 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Rock Wave, located 18 km away (11 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 dominant wind at Rock Wave blows from the S. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Rock Wave. On the other hand, dominant spokes show favoured directions, and the more the darkest shade of blue, the stronger the wind. Spokes point in the direction the wind blows from. Over an average December, the model suggests that winds are light enough for the sea to be glassy (light blue) about 4% of the time (1 days each December) and blows offshore just 6% of the time (2 days in an average December). During a typical December wind stronger than >40kph (25mph) was forecast for only a single days at Rock Wave
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.