The summer months, July and August in particular, see higher temperatures — normally around 81°F, but they often reach over 88°F at the height of the day. Visitor numbers reach their peak at this time.

Italy begins to feel significantly hot in June, but the peak "stifling" heat occurs in July and August. During these two months, temperatures in central and southern cities like Rome, Florence, and Naples regularly exceed 30°C (86°F) and can frequently spike above 35°C (95°F) during heatwaves (locally known as Lucifero). In 2026, the increasing frequency of "African Anticyclones" means that even Northern Italy, including the Po Valley and cities like Milan, experiences high humidity and stagnant heat that can feel quite oppressive. Many Italians traditionally take their vacations in August to escape the city heat for the cooler coastal breezes or the Dolomites, leading to some local shops closing. If you prefer warmth without the extreme intensity, May and September are considered the "sweet spots," offering temperatures in the mid-20s°C (70s°F) which are perfect for walking tours. Conversely, if you are visiting Sicily or Puglia in July, you should plan for a "siesta" schedule, staying indoors during the peak sun hours of 1:00 PM to 4:00 PM.