Krk is located in Kvarnerski zaljev (the Quarner Bay), in the immediate vicinity of the city and port of Rijeka. Although it is located in the north, the Mediterranean climate gives it warm summers and mild winters which is one of its important tourist trump-cards.

In winter the temperature falls to 5 degrees Centigrade, for a few days it can fall even below zero, with the exception of the depression by the lake of Ponikve where the temperature can be much lower than on the rest of the island, as low as -15.

The temperature of the sea in winter decreases to about ten degrees and when the new bathing season is in question, old islanders used to say " alaways on the first Sunday od May", which translates into degrees Celsius as 16 to 19, depending on the year. In summer (July, August), the temperature of the see is about 24 degrees.