This image describes how frequently and how strongly the wind blows from different directions through a typical January. The biggest spokes point in the directions the wind most commonly blows from and the shade of blue suggests the strength, with deep blue strongest. It is based on 1728 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Port Macquarie-Town Beach, located 7 km away (4 miles). There are too few 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 prevailing wind at Port Macquarie-Town Beach blows from the ESE. If the rose plot shows a nearly round shape, it means there is no strong bias in wind direction at Port Macquarie-Town Beach. On the other hand, dominant spokes illustrate 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 January, the model suggests that winds are light enough for the sea to be glassy (light blue) about 12% of the time (4 days each January) and blows offshore 18% of the time (6 days in an average January). In a typical January wind stronger than >40kph (25mph) was predicted for only a single days at Port Macquarie-Town Beach
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.