The scirocco is a warm, humid wind arriving from the open sea: it raises a long swell that stirs up sandy seabeds and often carries Saharan dust. On exposed coasts the water turns murky; on the sheltered beaches on this page it stays clear.
The scirocco comes from the south-east: the best beaches are on the opposite side of the island or protected by headlands, where the wind comes off the land and the sea stays calm.
This page checks the live wind over Sardinia and highlights when the scirocco is active. In forecasts, look at the wind direction: scirocco = wind from the south-east.