A perfect right hand tube, groomed offshore and no one out. But what causes those dreamy offshore conditions. Winds are caused from multiple factors, one of which being the temperature difference between a landmass and a body of water. When the sea temperature is cooler than the land, as land temperatures increases throughout the day, the onshore wind will increase. This is an attempt to equal out the temperature difference by blowing cool air from the ocean over the warmer landmass. But on really hot days you get a sudden change from a cool onshore breeze, to really hot offshore winds. This is now hot air from the land trying to equal out the temperature difference by warming up the ocean. Same thing is happening in winter when the sea temperature is warmer than land temperature. You get cold early morning offshore winds trying to cool down the ocean which will tend to get lighter and change direction as the land temperature approachs ocean temperature.