Siena is one of Italy’s most captivating medieval cities, a place where Gothic brick architecture, the thunder of the Palio horse race, and the deep pride of its 17 contrade neighbourhoods have shaped daily life for 800 years. Set on three hills in the heart of Tuscany, 70km south of Florence, the city’s UNESCO-listed historic centre is a labyrinth of narrow stone alleys that all lead, eventually, to the magnificent shell-shaped Piazza del Campo. Siena’s climate is Mediterranean with continental touches , hot, dry summers with temperatures reaching 31°C (88°F) in July, and cool winters averaging 2°C to 10°C (36°F to 50°F). The wettest months are October (110mm) and November (100mm). Whether you are visiting for the Palio, exploring the Duomo and its famous mosaic floor, or using Siena as a base to explore Chianti wine country, this guide covers everything you need to plan your trip.
Siena Weather & Climate at a Glance
Siena sits at 322 metres (1,056 feet) elevation in the Tuscan hills, giving it warmer summers and cooler winters than coastal Italian cities at the same latitude. Annual rainfall totals about 800mm (31 inches), concentrated in autumn (October-November) and spring (March-April). July is the driest and hottest month (31°C / 88°F average high, 30mm rain), while January is the coldest (10°C / 50°F high, 2°C / 36°F low). Snow is rare , the city sees at most one or two light dustings per winter. The best weather for sightseeing runs from late April through mid-June and September through mid-October, with daytime highs of 17-27°C (63-81°F) and 7-10 hours of daily sun. For detailed monthly temperature, rainfall, and sunshine data, see the {u_link(SIENA_LINK + “/siena-weather-by-month/”, “Siena weather by month guide”)}.
Seasonal Snapshot
- Spring (Mar-May): March is cool and unpredictable (14°C/5°C), April brings green hills and wildflowers (17°C/7°C), May delivers the first reliably warm days (22°C/11°C). Ideal for countryside walking and photography.
- Summer (Jun-Aug): June is hot (27°C/14°C) and busy, July peaks at 31°C (88°F) with the July 2 Palio, August matches the heat at 30°C with the August 16 Palio. Book months ahead for Palio dates.
- Autumn (Sep-Nov): September is still warm and pleasant (26°C/14°C), October brings the most rain (110mm) but beautiful autumn foliage and food festivals, November is grey and the quietest month of all.
- Winter (Dec-Feb): Cool and quiet (2-10°C), with festive Christmas markets in Piazza del Campo in December. January and February offer the lowest hotel rates and empty museums , the best time for budget travellers who do not mind cool weather.
Explore Siena: Complete Travel Guides
- Siena Weather by Month: Detailed monthly breakdown of temperatures, rainfall, sunshine hours, and what to pack for each season.
- Best Time to Visit Siena: Month-by-month guide to choosing the best dates for weather, lower prices, fewer crowds, and major events.
- Things to Do in Siena: The essential sights from Piazza del Campo and the Duomo to Santa Maria della Scala, with ticket prices, opening hours, and insider tips.
- Siena Events & Festivals: Everything about the Palio di Siena, the Siena Jazz Festival, classical music, food sagre, and the Christmas market.
- Best Neighborhoods in Siena: A guide to the city’s contrade and quarters , where to stay, eat, and explore in each area.
- Where to Stay in Siena: Area-by-area accommodation guide with specific hotel recommendations across luxury, mid-range, and budget tiers.
- Siena Travel Tips & FAQ: Airports, buses, driving rules, ZTL zones, what to eat, tipping, safety, and practical answers.
Where Is Siena?
Siena is in central Tuscany, about 70km (43 miles) south of Florence and 120km (75 miles) southeast of Pisa. The city sits on the Via Francigena, the medieval pilgrimage route from Canterbury to Rome, which shaped its development as a banking and trading power in the 12th and 13th centuries. The historic centre occupies three hills at the meeting point of the Arbia and Elsa valleys. The surrounding countryside , the Crete Senesi to the south, Chianti to the north, and the Val d’Orcia to the southeast , is some of the most photographed rural landscape in Italy.
Quick Facts
- Population: Approximately 54,000 in the city, 220,000 in the province.
- Elevation: 322 metres (1,056 feet) above sea level.
- Annual rainfall: About 800mm (31 inches), wettest in October (110mm).
- Warmest month: July, average high 31°C (88°F), average low 17°C (63°F).
- Coolest month: January, average high 10°C (50°F), average low 2°C (36°F).
- Sunniest month: July (11 hours of sunshine per day).
- Major events: Palio di Siena (July 2 and August 16), Siena Jazz Festival (July-August), Mercato nel Campo (first weekend of December).
- Nearest airports: Florence FLR (80km, 1 hour), Pisa PSA (120km, 1.5 hours).
- UNESCO status: Historic centre inscribed in 1995.
Suggested Hotels in Siena
Grand Hotel Continental Siena
Siena’s only 5-star hotel, occupying a 17th-century palazzo on Via Banchi di Sopra with frescoed ceilings, antique furnishings, and a vaulted wine cellar. Best for luxury travellers and special occasions. {booking_link(“https://www.booking.com/hotel/it/grand-hotel-continental-siena.html”)}
Palazzo Ravizza
A historic 4-star hotel with a private garden and sweeping countryside views, family-run since 1922 and just a 5-minute walk from Piazza del Campo. Best for couples seeking character and tranquillity. {booking_link(“https://www.booking.com/hotel/it/palazzo-ravizza-siena.html”)}
Hotel Athena
A modern 4-star hotel inside Porta San Marco with an on-site parking garage, rooftop terrace, and 100 clean, functional rooms a 10-minute walk from the centre. Best for drivers and families. {booking_link(“https://www.booking.com/hotel/it/hotel-athena-siena.html”)}
City Articles
Best Neighborhoods in Siena: Where to Stay, Eat & Explore – The Weather Guide
Siena’s historic centre is divided into 17 contrade (districts), each with its own flag, church, fountain, museum, and fierce identity that stretches back to the Middle Ages. For visitors, these contrade cluster into several larger areas defined by the city’s three hills. Most of what you will want to see lies within the walled centro […]
Read MoreBest Time to Visit Siena: Weather, Crowds & Events Guide – The Weather Guide
The best time to visit Siena depends on what you are looking for: perfect sightseeing weather, the famous Palio horse race, lower prices, or fewer crowds. Siena has a Mediterranean climate with hot summers and cool winters. The peak tourist season runs from May through September, with July and August being the hottest and busiest […]
Read MoreSiena Events & Festivals: Palio, Music & Cultural Calendar – The Weather Guide
Siena’s event calendar is dominated by the Palio, the raw and intense twice-yearly horse race that has defined the city for centuries. But beyond the Palio, the city hosts jazz festivals, classical music series, food sagre in surrounding villages, and a traditional Christmas market. This guide covers the major annual events with dates, locations, and […]
Read MoreSiena Travel Tips & FAQ: Transport, Safety & Practical Guide – The Weather Guide
This guide covers the practical details for visiting Siena: which airports to fly into, how to get from Florence or Pisa to Siena, getting around the city, what to eat and drink, tipping customs, safety, and answers to common questions. Siena is a safe, walkable city where most practical difficulties come down to the steep […]
Read MoreSiena Weather by Month: Temperatures, Rainfall & Climate Guide – The Weather Guide
Siena sits in the hills of central Tuscany at 322 metres (1,056 feet) above sea level, giving it a Mediterranean climate with some continental influence. Summers are hot and dry, winters are cool with moderate rainfall, and spring and autumn bring pleasant temperatures ideal for exploring the medieval streets. The city receives about 800mm (31 […]
Read MoreThings to Do in Siena: Top Attractions, Landmarks & Activities – The Weather Guide
Siena is one of Italy’s best-preserved medieval cities, a UNESCO World Heritage site packed with Gothic architecture, major art collections, and deep-rooted traditions. The city’s historic centre is built on three hills and connected by narrow stone alleys that open onto the shell-shaped Piazza del Campo, one of Europe’s finest medieval squares. Most major attractions […]
Read MoreWhere to Stay in Siena: Best Areas & Hotels for Every Budget – The Weather Guide
Choosing where to stay in Siena comes down to three factors: location (inside or outside the medieval walls), budget, and whether you need parking. The historic centre offers atmospheric hotels in converted palazzi but at higher prices and with limited car access. Staying outside the walls saves money and simplifies driving but means a commute […]
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