Milan, depending on how you want to tour the city, is
virtually visitable all the year. Keep in mind most places, including
tourist destinations and museums, are closed on Mondays.
In autumn,
the weather is warm/cool, and in later months can be quite rainy and
foggy. At this time of the year, the city's inhabitants are very busy
with work, so, the only people you're likely to see wandering around are
tourists. All the major venues and shops are opened, since it is the
working part of the year.
In winter, the city can become very, very
cold (often below or around zero degrees centigrade), and the weather is
usually foggy and rainy if not snowy. However, the city, in the few
weeks before Christmas, becomes delightful to visit - the main sights
are all illuminated by stunning lights, a huge Christmas tree is set up
in front of the Duomo, vendors and markets can be found everywhere, many
shop and display windows are decorated and the streets become bustling
with locals and tourists alike. However, the only downside is that it
can become extremely crowded, noisy and busy.
In spring, the weather
is similar to that of autumn. People go back to work, and the
atmosphere becomes more quiet, yet serious unlike that of the winter.
Parks become nice to visit, as trees blossom. The city is also quite
nice to visit at Carnival, where people dress up and celebrate, and
during Easter, where there are special services held in churches and
some special events.
In summer, Milan can become extremely hot and
humid, with the odd powerful rainstorm here and there. Whilst in July,
apart from the weather, most shops remain open, in August, as many
locals go off to take their summer holidays, many businesses and venues
shut down (with the notice Chiuso per ferie, or shut down for vacation).
The city may become quite empty with the odd tourist strolling around,
and with several of the main sights