Split, Croatia has a Mediterranean climate, with mild, wet winters and hot, dry summers. Spring and fall are mild and brief.
Pollen levels in Split are generally highest in the spring, with tree pollen peaking in March and grass pollen in April. In the fall, weed pollen can be high, particularly in September.
The city's location by the Adriatic Sea and its mountains to the north help moderate the climate, but strong, dry, and gusty "bora" winds can cause pollen levels to spike.
When pollen counts are high, we suggest doing these things to help with allergies, especially on windy days when pollen is flying around.