Imperial Beach Wind Statistics, January averages since 2006
The rose diagram shows how commonly and how strongly the wind blows from different directions over a normal January. The longest spokes point in the directions the wind most commonly blows from and the shade of blue implies the strength, with the strongest winds shown by the darkest shade of blue. It is based on 1967 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Imperial Beach, located 36 km away (22 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 prevailing wind at Imperial Beach blows from the WSW. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Imperial Beach. Converseley, dominant spokes represent favoured directions, and the more deep blue, the stronger the wind. Spokes point in the direction the wind blows from. During a typical January, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 23% of the time (7 days each January) and blows offshore 37% of the time (11 days in an average January). Over an average January winds exceeding >40kph (25mph) are not expected, but 1 have winds on the range 30-40 (19-25) at Imperial 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.