Hvar's climate is archetypal Mediterranean. With an annual average of 7.7 hours of sunshine per day and as many as 2843 hours of sun per year, it is the sunniest island in the Adriatic. By comparison, Dubrovnik has an average of 7.0 hours and Nice, in the south of France, averages 7.2 hours of sunshine per day. Winter is gentle, summer is warm, and autumn is slightly warmer than spring. In March and April temperatures gradually rise as the days get longer, so that April on Hvar is much like the mid-summer in the most middle European cities. While overall variations in temperatures are small, Hvar maintains a subtle and romantic change of seasons.
The glare of the sun and warmth of the sea are cooled by the balmy summer maestral wind. In the summer months, rain is rare, but welcome phenomenon, bringing refreshment and brief changes in the weather. The magnetic tourist attraction of summer does not end with the month of September, in fact, autumn and spring bring weather to fortify body and soul, particularly if you love abundant greenery and the strange changes in the weather brought by the jugo (scirocco) and bura, the stimulating freshness of a mild winter and gentler pace of daily life, with peace and quiet.
The mild and gentle climate offers an ideal scenario for a wealth of plant species. There are over 1.150 and it is worth noting that this is a number which can be compared to the entire plant species of whole territories of some European countries. The plants of Hvar are typical of the Mediterranean and include some which are endemic to southern Croatia.