Rennes

Rennes is the historic capital of Brittany, a city of half-timbered medieval houses, grand 18th-century squares, and one of the largest student populations in France. With 220,000 residents and 67,000 university students, it has a youthful energy that balances its deep history. The city sits at the confluence of the Ille and Vilaine rivers, about 50 kilometres from the English Channel, which gives it an oceanic climate with mild temperatures year-round and rainfall spread evenly across the seasons. Rennes is also one of France’s most liveable cities, consistently ranking high for quality of life, green space, and cultural offerings. Its TGV connection puts Paris just 1 hour 25 minutes away, while Saint-Malo and Mont Saint-Michel are easy day trips.

Rennes Weather at a Glance

Rennes has an oceanic climate with mild temperatures, no extremes, and rain possible in any month. Summers are warm but rarely hot, with July and August averaging highs of 23 degrees Celsius (73 degrees Fahrenheit) and lows around 14 degrees Celsius (57 degrees Fahrenheit). Winters are cool: January averages 8 degrees Celsius (46 degrees Fahrenheit) during the day and 3 degrees Celsius (37 degrees Fahrenheit) at night. Frost occurs on about 25 to 30 mornings per year, concentrated between December and February. The city receives roughly 680 millimetres of rain annually spread across 140 days. December is the wettest month at 70 millimetres; August is the driest at 40 millimetres. Snow is rare, averaging just 2 to 3 light snow days per winter. The city gets about 1,700 hours of sunshine per year, which is modest compared to southern France but typical for the northwest. For a detailed month-by-month breakdown with a climate data table, see the Rennes weather by month guide.

Seasonal Snapshot of Rennes

• Spring (March to May): Temperatures climb from 12 degrees Celsius (54 degrees Fahrenheit) in March to 18 degrees Celsius (64 degrees Fahrenheit) in May. Rainfall is moderate at 50 to 60 millimetres per month. Parks come alive with blossoms, and the Saturday market at Place des Lices hits its stride. The Mythos Festival in April brings storytelling and spoken word to venues across the city.
• Summer (June to August): The best season for weather with highs of 21 to 23 degrees Celsius (70 to 73 degrees Fahrenheit) and the least rain (40 to 45 millimetres per month). Long daylight hours stretch past 10 pm in June. Les Tombees de la Nuit in July transforms the streets with free performances. Outdoor dining and canal-side walks are at their best.
• Autumn (September to November): September can feel like an extension of summer with highs of 20 degrees Celsius (68 degrees Fahrenheit). By November, temperatures drop to 11 degrees Celsius (52 degrees Fahrenheit) and rain increases to 70 millimetres. The autumn colours in Parc du Thabor are worth seeing in October. The Yaouank Breton music festival in November fills venues with traditional fest-noz dancing.
• Winter (December to February): Cool and damp with highs of 8 to 9 degrees Celsius (46 to 48 degrees Fahrenheit) and about 2 to 3 hours of daily sunshine. The Trans Musicales festival in early December is a major draw for music fans. The Christmas market brings festive atmosphere to the medieval squares. This is the cheapest time to visit with hotel rates dropping 30 to 40 percent.

Explore Our Rennes Travel Guides

1. Rennes Weather by Month – Detailed monthly climate data including temperatures, rainfall, humidity, and sunshine hours. Includes a comparison table to help you pick the best month for your trip.
2. Best Time to Visit Rennes – Season-by-season analysis covering the best windows for weather, festivals, lower prices, and avoiding crowds. Includes specific date ranges and what to expect.
3. Things to Do in Rennes – Comprehensive guide to attractions including Parlement de Bretagne, Parc du Thabor, Les Champs Libres, the medieval old town, and day trips to Saint-Malo and Mont Saint-Michel.
4. Rennes Events and Festivals – Month-by-month event calendar covering Trans Musicales, Les Tombees de la Nuit, Mythos Festival, Yaouank, Christmas markets, and more.
5. Best Neighborhoods in Rennes – Breakdown of each district from the medieval Centre Historique to the student quarter of Sainte-Anne and the leafy Thabor area, with hotel price ranges and best-fit recommendations.
6. Where to Stay in Rennes – Area-by-area accommodation guide with specific hotel recommendations at luxury, mid-range, and budget tiers. Includes verified Booking.com links for each property.
7. Rennes Travel Tips and FAQ – Practical information covering airport transfers, Metro tickets, bike rental, creperie etiquette, tipping customs, safety, and more.

Where Is Rennes and What Shapes Its Climate

Rennes sits in the Ille-et-Vilaine department of Brittany, about 50 kilometres south of the English Channel coast and 350 kilometres west of Paris. The city lies at the eastern edge of the Armorican Massif, an ancient geological formation that gives Brittany its rolling hills and rocky coastline. Two rivers meet in the city: the Ille from the north and the Vilaine from the east, which then flows south toward the Atlantic. Rennes’ oceanic climate is shaped by its position between the Channel and the interior of France. It does not get the full maritime moderation of coastal Brest (which is wetter and windier) or the continental extremes of Paris (which is colder in winter and hotter in summer). The result is a temperate middle ground: mild winters without deep freezes, warm but not scorching summers, and rainfall spread throughout the year rather than concentrated in a wet season.

Rennes Quick Facts

• Best months for weather: June, July, and September (warm, driest months, long daylight)
• Best months for festivals: July (Les Tombees de la Nuit) and December (Trans Musicales)
• Warmest month: July and August, both averaging 23 degrees Celsius (73 degrees Fahrenheit) during the day
• Coolest month: January, averaging 8 degrees Celsius (46 degrees Fahrenheit)
• Wettest month: December (70 millimetres, 16 rainy days)
• Driest month: August (40 millimetres, 10 rainy days)
• Sunniest month: July (7.5 hours of sunshine per day)
• Annual rainfall: 680 millimetres across roughly 140 days
• Annual sunshine: 1,700 hours
• TGV to Paris: 1 hour 25 minutes, from 16 euros with Ouigo
• Metro: Two lines (A and B), single ticket 1.50 euros
• Population: 220,000 city, 730,000 metropolitan area
• Students: 67,000, roughly 30 percent of the population

Suggested Hotels in Rennes

Balthazar Hotel & Spa Rennes – MGallery Collection

Rennes’ only five-star hotel occupies a 19th-century building in the heart of the old town with an indoor pool, spa with hammam, and a gastronomic restaurant. The 54 rooms mix classic architecture with contemporary design. Best for couples and luxury travellers. Check rates and availability

Mercure Rennes Centre Parlement

A four-star hotel with a 9.3 location score from guests, set between the train station and the Parlement de Bretagne. Rooms are modern with air conditioning, and the breakfast buffet highlights local Breton products. Best for business travellers and couples. Check rates and availability

Ibis Budget Rennes Route de Lorient

A no-frills budget hotel with free parking and a 24-hour front desk, located 4 kilometres from the centre with bus connections. Electric vehicle charging is available on site. Best for budget travellers and road-trippers. Check rates and availability