Lake Annecy is consistently recorded as one of the cleanest freshwater lakes in Europe — the result of a 1962 ban on industrial activity and a strict prohibition on motorised watercraft that remains in force today. The old town (Vieille Ville) sits at the northern tip of the lake, a compact network of arcaded streets and canals that drain into the lake through the Thiou river. From late June through August, the lakefront is busy. Outside those weeks, Annecy functions as a working alpine city of 140,000 people with good transport connections, one of the most attractive old towns in the French Alps, and a lake that provides swimming, cycling, and paddleboarding without the crowds that define the summer peak.
The Old Town
The Vieille Ville covers about 1 square kilometre and is walkable in 90 minutes without rushing. Most of the buildings date from the 12th–18th centuries, with arcaded ground floors (portiques) that keep the streets dry in Annecy's frequent mountain rain.
Palais de l'Île: a 12th-century fortress built on a triangular island in the Thiou canal — the only building actually in the water, connected to both canal banks by narrow bridges. It served as a prison, court, and administrative building across seven centuries. Now a museum of local history (€4, allow 45 minutes). The exterior is the standard Annecy image.
Cathédrale Saint-Pierre (16th century): plain Gothic interior, free entry. Worth five minutes for the quiet — the streets directly outside are the canal-viewing area and can be loud in summer.
Rue Sainte-Claire: the main arcaded street of the old town, lined with food shops and restaurants. The market on Tuesday, Friday, and Sunday mornings takes over the street and the adjacent squares — fresh produce from the Fier valley, Reblochon and Tomme de Savoie cheeses, dried sausages, and lake fish.
The Lake
Lake Annecy is 14km long, 3km wide, and 65 metres at its deepest point. The water temperature reaches 22–24°C in July and August — warm enough for extended swimming. There are three public beaches free of charge: Plage d'Annecy-le-Vieux (east bank, 3km from the old town, best access for families), Plage Impérial (west bank, in front of the Imperial Palace hotel), and Plage des Marquisats (south of the old town, nearest to the centre, gets busy first).
Cycling the lake: a 40km circuit follows the entire lakeshore on a dedicated path. Rental bikes available from multiple operators near the main train station (€15–25/day). Allow 3.5–5 hours at a relaxed pace; the south end of the lake (Talloires and Doussard) is quieter and more scenic than the north. The Bout-du-Lac nature reserve at the southern end has birdwatching without any tourist infrastructure.
Paddleboarding and kayaking: rental from the Plage des Marquisats and the Plage d'Annecy-le-Vieux, €15–25/hour. No motorised boats are permitted on the lake, which means the water surface stays calm enough for paddling even on windy afternoons.
Swimming rules: the designated swimming areas are marked with buoys and patrolled by beach wardens June–August. The eastern bank (Talloires side) has smaller, quieter coves outside the designated beaches.
Getting to Annecy
From Paris Lyon: direct TGV, 3h30–4h (some require a change at Lyon or Chambéry), €40–100 depending on booking lead. From Lyon Part-Dieu: TGV or TER, 1h45–2h, €20–40. From Geneva: train (SBB), 1h–1h15, CHF 30–50. Genève airport (GVA) is 45km away — Annecy is a more interesting base than Geneva for an Alps visit. From Grenoble: train, 2 hours, €20–30.
Annecy's train station is 15 minutes' walk from the old town and 20 minutes from the lakefront.
Winter and Ski Access
Annecy in winter is colder (0–8°C, regular snow on the surrounding peaks) and much quieter than summer. The lake does not freeze. Three ski resorts are within 40km: La Clusaz (32km, 132km of pistes), Le Grand-Bornand (35km, 90km of pistes), and Semnoz (15km, closest, smaller — good for beginners). Bus services run from Annecy's bus station to all three in ski season (€10–15 return, 45–75 minutes).
For serious skiers, the Aravis and Porte des Aravis areas accessible from La Clusaz offer more vertical and longer runs than the immediate Annecy slopes. Chamonix (80km east) is a 90-minute drive.
When to Visit Annecy
May–June: the best non-peak window. Temperatures 16–22°C, the lake filling to swimming temperature by mid-June, old town crowds manageable. The Annecy International Animation Film Festival (June, one of Europe's most significant animation industry events) fills hotels for its specific week.
September: warm enough to swim until mid-September (lake around 21°C), crowds thinning, autumn light starting. Very good.
July–August: warm (24–28°C), the lake at maximum temperature (22–24°C), and the busiest period. The lakefront on weekends is extremely crowded; the old town less so. Book accommodation 2–3 months ahead.
Winter (December–March): quiet, ski access available, good hotel rates. The old town markets continue year-round.
Frequently Asked Questions
How many days do you need in Annecy?
Two days is the minimum that makes the train journey worthwhile: one day for the old town and a swim, one day for the lake circuit by bike. Three days allows for a ski resort day in winter or a day trip to the southern lake (Talloires) in summer.
Is Annecy expensive?
More than smaller Alpine towns, less than Geneva. A mid-range dinner at a table-service restaurant runs €25–40/person with wine. Lake-view hotel rooms in summer run €120–250/night. Accommodation 10 minutes' walk from the lakefront is 30–40% cheaper.
What is Reblochon cheese and where to buy it in Annecy?
Reblochon is a semi-soft washed-rind cheese from the Aravis valley, made from raw milk from three specific Savoie breeds. It is the cheese in tartiflette (a potato, bacon, and cream gratin, the standard Savoyard dish). Buy it at the Tuesday, Friday, or Sunday market in the old town — the farm vendors have better product than the supermarkets.
Can you swim in Lake Annecy in June?
Water temperature in June typically reaches 18–20°C — cold but swimmable for those accustomed to northern European water. The designated beaches open June 1. The south end of the lake (Talloires) is slightly warmer than the north in early summer due to shallower depth.
Is Annecy worth visiting in winter?
Yes, particularly if you combine it with skiing. The old town Christmas market runs through December and the lake view in winter light is genuinely good. Expect temperatures 0–6°C and occasional snow in the town itself.
