The sea tides of the Adriatic Sea are of the mixed type, which means that they have a half daily rhythm during full and new moons, and a daily rhythm in the first and last quarters. High and low tides have relatively low amplitudes, which increase from the south towards the north. Thus in the southern Adriatic the difference is around 40cm while in Istria it is about 1m. In narrow channels and inlets the tide can rise significantly during a strong Bura.