The geographical position and the natural characteristics determine the climate of Attica. In general the climate is mild with hot summers and relatively mild and damp winters. In summer the highest temperature obtains 30 to 32 degrees centigrade but, at times of heat - waves it can reach 38 and even 42 degrees. The temperature seldom drops to 0 degrees in winter, whereas 8 to 12 degrees is the usual temperature. The separation of all year seasons is quite distement.
Winds are usually moderate in winter whereas in summer the sea breeze freshes the hot days.
It snows at times in the northern parts of Athens, particularly on mount Parnis. The concentration of large industries in the region and the deforestation of the surrounding mountains have led to unpleasant climatological phenomena in recent years, such as the smog that forms over Athens when the wind does not blow and now and again devastating inundations. Despite the industrialisation of Athens and the consequent pollution, the golf of Saronicos remains relatively clean and its beauties offer divers happy emotions. Though the fauna does not trigger vast interest, because of the extensive fishing that has been practiced, the wild and natural beauty of the sea bed is sufficient compensation. Usually divers will encounter a great number of octopus fish of small size, urchins and various shells.