The weather in Dubrovnik is relatively similar to the country's average temperatures, and is slightly cooler than its seaside counterpart of Split. If you're looking to soak up the sunshine, the warmest months in Dubrovnik are July and August, which coincide with the peak tourist season.

Temperature-wise, Dubrovnik and Split are very similar because they both share a Mediterranean climate and are situated along the same stretch of the Adriatic coast. However, Dubrovnik often feels hotter due to its unique geography and urban layout. The Old Town of Dubrovnik is a dense "stone bowl" surrounded by massive, thick medieval walls that trap heat and limit airflow. During the peak of July and August, the limestone pavement (the Stradun) absorbs solar energy all day and radiates it back at night, creating a localized "heat island" effect. Split, while also hot, is a more open city with wider boulevards and the large Marjan Hill park, which allows for better sea breezes to circulate through the city. Statistically, the average high in August for both cities is around 30°C (86°F), but Dubrovnik’s humidity can sometimes be slightly higher because it is further south. If you are visiting in the summer, both cities require sun protection and hydration, but you may find the "stifling" feeling more pronounced in the narrow, crowded alleys of Dubrovnik compared to the more expansive Riva promenade in Split.