- The Climate -
Istanbul's climate is a combination of the temperate and Aegean type with hot sunny summers, warm springs and autumns, and mild winters. Average summer day temperatures are around 82F (28C), with spring and autumn temperatures around 68F (20C) and average summer sea water temperatures are around 73F (23C).
Marmara, Aegean, and Mediterranean coasts :
These coasts have a typical Mediterranean climate with hot summers and mild winters.
The swimming season becomes shorter the further north one goes:
Marmara and North Aegean - June to September
South Aegean and Mediterranean - April to November
Black Sea Coast :
Temperate climate with warm summers, mild winters with rain.
Swimming season: June to September
Central Anatolia :
These areas have a steppe climate with hot, dry summers, cold winters.
Skiing season is December to April.
Eastern Anatolia :
Long snowy, cold winters with mild summers.
Skiing season is between November and June
Southeast Anatolia :
These areas have a hot summer with mild, rainy winters.
Generally speaking about weather; light clothing is recommended in summer for all areas but some areas it can get very hot and temperature can reach to 100F+ (40C). In the winter months from November to March, sweaters and overcoats should be brought.
Depending on where you go, for example, areas in central Anadolu (Anatolia) such as SIVAS, KAYSERI and further east to ERZURUM or KARS, heavy winter coats and snow boots are recommended.
JAN FEB MAR APR MAY JUN JUL AUG SEPT OCT NOV DEC ANTALYA Air 10 11 13 16 20 25 28 28 25 20 15 12 Water 17 17 17 18 21 24 27 28 27 25 22 19