Siena in September
Autumn in Siena: expect warm weather with highs of 25°C.
Photo: Jezael Melgoza / Unsplash
September Weather in Siena
🌡️
Average High
25°C
❄️
Average Low
15°C
🌧️
Rain Days
10.8
🌤️
Season
Autumn
What to Expect
September in Siena brings warm weather with daytime highs around 25°C and nighttime lows of 15°C. You can expect approximately 10.8 days of rain during the month. This is peak tourist season, so book accommodation and popular tours well in advance. Prices tend to be higher.
Packing tip: Bring layers for comfortable days and cooler evenings. A light jacket is advisable. An umbrella or rain jacket is essential.
September Costs in Siena
Budget
EUR 70
per day
Mid-Range
EUR 150
per day
Luxury
EUR 300
per day
Things to Do in Siena in September
Our Top 5 Favourite Tours in Siena
Hand-picked guided experiences you can book in advance on GetYourGuide.
Siena Walking Tour: Highlights & Hidden Gems
Discover Siena on foot with a local guide who knows every backstreet and story. You will cover the must-see landmarks and stumble upon places most visitors never find.
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Siena Food Tour: Street Food & Local Favourites
Eat your way through Siena with a local foodie as your guide. From bustling markets to tucked-away restaurants, taste the dishes the city is truly known for.
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Best of Siena: Skip-the-Line Top Attractions
Skip the queues and get straight into Siena's top attractions with pre-booked access. An expert guide brings each site to life with stories and context you would not get on your own.
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Day Trip from Siena: Scenic Excursion
Escape Siena for the day and explore the stunning surroundings. Transport, guide, and itinerary are all sorted so you can relax and enjoy the scenery.
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Siena Cultural Experience: History & Traditions
Go beyond sightseeing and connect with Siena's living culture. From hands-on workshops to historic neighbourhood walks, this is the side of the city most travellers miss.
View Tour DetailsWe earn a small commission if you book through these links, at no extra cost to you. This helps us keep FindYourStay free.
Hotels in Siena for September
Peak season fills up fast. Book early for the best selection.
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FAQ: Siena in September
What is the weather like in Siena in September?
Siena in September has average highs of 25°C and lows of 15°C, with around 10.8 rainy days. The weather is generally warm.
Is September a good time to visit Siena?
Yes, September is one of the best months to visit Siena. The weather is comfortable and conditions are ideal for sightseeing.
How crowded is Siena in September?
September is peak season in Siena, so expect larger crowds at popular attractions. Book accommodation and tours in advance.
How much does it cost to visit Siena in September?
Budget travellers can get by on around EUR 70/day. Mid-range travellers should budget EUR 150/day. Peak season pricing applies, so book early for the best rates.
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