This image illustrates how often and how strongly the wind blows from different directions over a normal year. The largest spokes point in the directions the wind most commonly blows from and the shade of blue indicates the strength, with deep blue showing the strongest winds. It is based on 20353 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Happisburgh, located 26 km away (16 miles). There are too few 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 Happisburgh blows from the N. If the rose diagram shows a close to circular outline, it means there is no strong bias in wind direction at Happisburgh. Converseley, 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 year, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 5% of the time (18 days each year) and blows offshore 23% of the time (22 days in an average year). Over an average year winds stronger than >40kph (25mph) are expected on 11 days at Happisburgh
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.