Milan in September: Mild Afternoons, the Duomo Terraces, Sforza Castle and La Scala Tours

Yes, September suits a city trip to Milan: afternoons reach 78°F (26°C), warm enough for the Duomo terraces and a walk along the canals without the heat of August.

Rain is the catch. About five days in the month bring some, and daylight is already down to 12 hours 37 minutes by mid-September, so plan the outdoor sights early and keep a museum in reserve.

At a glance

• Afternoon high: 78°F (26°C)
• Night low: 59°F (15°C)
• Rainy days: 5
• Rainfall: 3 inches (74 mm)
• Daylight on September 15: 12 hours 37 minutes

What is the weather like in Milan in September?

*Long-term monthly averages.*

September in Milan is mild and comfortable. Afternoons reach 78°F (26°C) and nights fall to 59°F (15°C), so daytime sightseeing works in light clothes and evenings call for a layer.

Five days of the month see rain, and 3 inches (74 mm) falls in total. Plan the Duomo terraces, the castle walkways and the canal walk for the drier hours, and keep museums for the wet ones.

August is hotter, with a high of 86°F (30°C) and a low of 66°F (19°C), and a similar number of rainy days. October is clearly cooler, at 66°F (19°C) in the afternoon and 50°F (10°C) at night, with about seven rainy days and daylight down to 11 hours by mid-month. September sits in the comfortable middle.

What to do in Milan in September

The Duomo, its terraces and museum

The Duomo complex bundles four visits: the Cathedral, the Archaeological Area, the Terraces and the Museum. The Madonnina d’oro stands on the main pinnacle, and the archaeological area holds the remains of the Battistero di San Giovanni alle Fonti. The museum has 26 rooms.

September afternoons at 78°F (26°C) make the climb to the terraces pleasant. The YesMilano City Pass Standard includes the cathedral and the terrace with stairs, so it is worth checking before buying tickets one by one. Save the museum for a rainy day.

Sforza Castle and its museums

One Sforza Castle ticket gives access to all the Castle Museums, including the Ancient Egypt Gallery. The Panoramic Battlements add autonomous access to a stretch of the castle’s patrol walkways, which makes the castle a good outdoor stop on a clear day.

Guided tours of the museums are organized by Ad Artem. The castle museums are also part of the City Pass Standard, along with the GAM/Modern Art Gallery, the Archaeological Museum and the Natural History Museum. On a rainy day those give you plenty of indoor options.

The Navigli on foot and by boat

The guided Navigli tour is on foot and by boat and starts in the neighborhood of the Basilica di Sant’Eustorgio. The boat cruise lets guides show the old places plied by the boats that supplied old Milan, and it passes the Ruelle des Lavandai, one of the wash-houses where women washed Milanese clothes.

The itinerary ends with a walk along the alzaia of the Naviglio Grande, the towpath beside the canal. Bring comfortable shoes and a layer for the cooler end of the day.

La Scala

La Scala stands in Piazza della Scala and has 2,030 seats. It offers guided tours in Italian, English and French at some times of day, so check the schedule before you go.

Performances can also be watched live or on demand by streaming. The season’s opening night, the Prima, falls on December 7, Sant’Ambrogio Feast Day, so it does not coincide with a September visit.

What to pack for Milan in September

September asks for light daytime clothes and one warm layer, plus something for the showers.

• A light jacket or sweater for nights at 59°F (15°C)
• A compact umbrella or rain jacket for the five rainy days
• Comfortable shoes with grip for the stairs up to the Duomo terraces
• Walking shoes for the alzaia of the Naviglio Grande
• Light clothes for afternoons near 78°F (26°C)

What to know before visiting Milan in September

The Infopoint Milano gives information in five languages (Italian, English, French, German and Russian) and provides maps and free brochures. The tourist office also offers luggage storage and tourist tax services, which helps on a day when you arrive before your room is ready.

The YesMilano City Pass Standard includes a 3-day public transport ticket and entry to the Duomo cathedral and terrace, the Sforza Castle Museums and several other museums. It also offers discounts of up to 30% on the YesMilanoPass app.

Is September a good time to visit Milan?

Yes, September is a good time for travelers who want culture, walking and food in mild weather. Afternoons are warm without being hot, and the main sights, from the Duomo terraces to the Sforza Castle walkways, are comfortable to visit.

Compared with August, afternoons are 8°F (4°C) cooler and the nights are cooler too. Compared with October, September afternoons are 12°F (7°C) warmer, and there are fewer rainy days: five against seven.

If you want to climb the terraces, walk the Navigli and spend long days outside, September is the better pick. If museums are your main plan, October’s cooler, wetter weather will not hurt, but you will need a heavier jacket.

With the Duomo Museum, the Brera paintings and the Ambrosian Picture Gallery’s Codex Atlanticus on hand, a rainy September day still has plenty to fill it.