Tourism is of immense importance for the economy of the Republic of Croatia. The fundamental and unchangeable feature that characterises tourism in Croatia is its seasonality, i.e. the existence of a main tourist season in summer, which is a phenomenon that is most pronounced on the Croatian coast in the summer months. In light of the topicality of this matter, this paper will focus on the topic of seasonality, while also elaborating on the term of seasonality itself, together with the causes and consequences thereof. The corresponding outline of the level of seasonality in Croatia was obtained by comparison with countries that are similar to Croatia when it comes to their geographical position, climate and form of tourism. Considering the complexity of this topic, this paper will address those factors that impede the development of tourism outside the summer season, while also facilitating the uneven temporal and spatial distribution of tourism. Existing limitations notwithstanding, Croatia possesses vast potential for the development of year round tourism owing to the beauty of its natural environment and cultural and historical heritage, as well as to trends that contribute to the development of specific forms of tourism. Such trends could mark an important turning point in the approach that has been applied to tourism up to this point, as well as exert a significant influence on the economy in its entirety.