Gravata Wind Stats

The rose diagram describes how often and how strongly the wind blows from different directions through a typical December. The largest spokes point in the directions the wind most commonly blows from and the shade of blue indicates the strength, with deep blue strongest. It is based on 3448 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Gravata, located 26 km away (16 miles). There are insufficient recording stations world wide to use actual wind data. No doubt some coastal places have very localized wind effects that would not be predicted by NWW3. According to the model, the most common wind at Gravata blows from the SE. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Gravata. Converseley, 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 December, the model suggests that winds are light enough for the sea to be glassy (light blue) about 8% of the time (2 days each December) and blows offshore 25% of the time (8 days in an average December). In a typical December wind stronger than >40kph (25mph) was forecast for only a single days at Gravata

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