Naples enjoys a Mediterranean climate, with mild and rainy winters and hot and dry summers, but still refreshed by the sea breeze from the Gulf.
The particular morphological conformation of the territory however, obliges here to add that the city has in its interior different micro climates with the possibility to meet also significant climatic variations.
Moving a few kilometers in the many hilly districts as Camaldoli, because of the higher altitude, the clime is characterized by of 2-3 degrees.
The highest temperature ever recorded in Naples-Capodichino is 40° C, value reached on August 4,1981, and grazed at other times (the last in August 2007). On the whole, however, the Neapolitan summer is moderately warm but rather sultry.
The lowest value at the official level, always detected at Capodichino, is − 5.7° C and was registered on January 8, 2017.
Average rainfall - Naples
Yearly: 1005 mm
Rainfalls are quite abundant, circa 1,000 millimeters per year.
The rainiest season is autumn, especially the months of October and November, followed by the winter months.
So Naples is not always the “City of the Sun”.
During the summer, rains are rare, and they occur in the form of backhand or thunderstorm.
The city is sensitive to the wind of Libeccio, linked to the mild and rainy days, but also to the wind of Tramontana, which brings cold, cloudiness and some rain. On summer afternoons the sea breezes prevail.
From December to February the weather is mild and rainy. The rains occur in periods of bad weather that last a few days, even in the form of nocturnal thunderstorms, and are accompanied by winds. There are also nice days, very pleasant during the day but also a little cold at night. In other cases, there may also be cold days, accompanied by the Tramontana wind, where the rain can fall, and snow in the mountains can appear, so that you can admire the snow-capped Vesuvius. In the colder nights the temperature can go below freezing.
The spring, from March to May is mild, with the rain gradually becoming more rare, and the beautiful days gradually more frequent. However, the cold and windy days are not lacking in March, and sometimes even in April. At Easter the good weather is not always guaranteed. May is generally a nice sunny month, although there may still be some cool and rainy day.
The summer from June to August is warm and sunny. Generally the air is sultry, but the breezes temper the heat. Within the city, in the most densely populated neighborhoods, however, the heat is felt. When the Scirocco blows from Africa, there may be very hot days, with a maximum of 36/38 degrees. The rains are very rare, but you can't rule out some thunderstorms now and then.
The autumn from September to November is very mild, with some beautiful days, sometimes still the summer flavor, especially in September and the first half of October. Autumn is also rainy, with possible waves of bad weather, associated with rain and thunderstorms, sometimes even strong, especially since mid-October.
Starting from November you can have the first cold days, especially in the second half of the month.