Although situated close to the Mediterranean Sea, Bosnia and Herzegovina is largely cut off from its climatic influence by the Dinaric Alps. The weather in the Bosnia region resembles that of the southern Austrian highlands—generally mild, though apt to be bitterly cold in winter.
Sarajevo‘s climate exhibits influences of oceanic (Cfb), humid continental (Dfa) and humid subtropical (Cfa) zones, with four seasons and uniformly spread precipitation. The proximity of the Adriatic Sea moderates Sarajevo’s climate somewhat, although the mountains to the south of the city greatly reduce this maritime influence. The average yearly temperature is 10 °C (50 °F), with January (−0.5 °C (31.1 °F) avg.) being the coldest month of the year and July (19.7 °C (67.5 °F) avg.) the warmest.
In Banja Luka the coldest month is January, with an average temperature of about 32 °F (0 °C), and the warmest month is July, which averages about 72 °F (22 °C). During January and February Banja Luka receives the least amount of precipitation, and in May and June it experiences the heaviest rainfall.
Herzegovina has more affinity to the Croatian region of Dalmatia, which can be oppressively hot in summer. In Mostar, situated along the Neretva River, the coldest month is January, averaging about 42 °F (6 °C), and the warmest month is July, averaging about 78 °F (26 °C). Mostar experiences a relatively dry season from June to September. The remainder of the year is wet, with the heaviest precipitation between October and January.
Plant and animal life
About two-fifths of the country is forested with pine, beech, and oak. Fruits are common; among them are grapes, apples, pears, and especially plums. The country’s rich and varied wildlife includes bears, wolves, wild pigs, wildcats, chamois (goatlike animals), otters, foxes, badgers, and falcons.