The best time to visit Croatia is between May and early June, and again from the end of September to October. These months represent the shoulder seasons, with warm weather along the Adriatic Sea and smaller crowds inland.
Summer months like July and August are hot and crowded, but offer the highest probability of great weather for water activities. However, there is a chance of active tours such as cycling and hiking being canceled as temperatures can climb over 100 degrees Fahrenheit.
Learn more: Best Time to Visit Croatia