Annecy climate at a glance
Annecy sits at the foot of the Alps, and its weather changes with the seasons. July and August are the warmest months. Winters are cold, with average lows below freezing from December to February. Rain falls in all twelve months, so even a summer trip needs a light waterproof layer.
The figures below come from the Météo-France station at Meythet, at 455 m. They are long-term monthly means, not a forecast and not a measurement for 2026. The sheet is titled 1991–2020, and the means shown were calculated for 1992–2020. They do not describe conditions on the high ground of the Semnoz.
Annecy weather by month
Average daily high and low in °C and mean monthly rain in mm.
| Month | High °C | Low °C | Rain mm |
|---|---|---|---|
| January | 5.6 | -1.4 | 94.2 |
| February | 7.6 | -1.0 | 78.9 |
| March | 12.3 | 1.7 | 89.9 |
| April | 16.3 | 5.0 | 96.1 |
| May | 20.3 | 9.2 | 109.2 |
| June | 24.2 | 12.7 | 95.1 |
| July | 26.5 | 14.4 | 101.1 |
| August | 26.1 | 14.2 | 106.4 |
| September | 21.3 | 10.7 | 108.3 |
| October | 16.3 | 7.2 | 109.8 |
| November | 10.0 | 2.5 | 109.7 |
| December | 6.3 | -0.6 | 112.5 |
February is the driest month in this series at 78.9 mm, and December the wettest at 112.5 mm. The summer months are not dry: July still averages 101.1 mm. Sunshine is never guaranteed, so keep your plans flexible.
Annecy tours for any season
Boat trips, flights and guided visits around Annecy, with live prices and availability.
Best time to visit by activity
There is no single best month. It depends on what you want to do.
Swimming and beach days: July and August
These months have the highest daily maxima, at 26.5 °C and 26.1 °C. The Impérial beach is supervised and charges an entry fee from 4 July to 31 August 2026, 10:00 to 19:00. Marquisats has lifeguards from 11:00 to 19:00 in the same period. See the beaches page for fees and rules.
Lake cruises: March to November
The cruise operator lists a season from 1 March to 30 November. Because of low water, the promenade cruises have left from Sevrier instead of Annecy since 23 September 2026. Check the departure port before you go.
Gorges du Fier: mid-March to mid-October
The 2026 season ran from 15 March to 15 October, so the gorge is closed for the winter. Plan a visit for spring through early autumn.
Paragliding: April to October
The tandem offer described on the paragliding page runs from April to October. Wind and visibility decide on the day.
Old town and museums: all year
The old town market runs on Tuesday, Friday and Sunday from 7:00 to 13:00 all year. The museums open from 10:00 to 12:30 and 14:00 to 17:30 from October to May, and from 10:30 to 18:00 from June to September. They close on Tuesdays. See the old town page.
Château de Menthon: spring to autumn
In the calendar currently published, the castle opens daily from 10:00 to 19:00 in July and August. In April, May, June, September and October it opens Friday to Sunday and on holidays from 13:00 to 18:00, with extra daily openings from 3 April to 3 May and from 17 October to 1 November.
Water temperature
A lake tourism listing showed 17 °C in a water widget on 19 October 2026. That is one dated reading from one listing, not the temperature of the whole lake. Check the current reading before you swim.
The lake level can also change. Low water in autumn 2026 moved the cruise departures to Sevrier. The supervised season at the Impérial and Marquisats beaches ends on 31 August.
Autumn and winter notes
Autumn cools quickly. Mean highs are 21.3 °C in September and 16.3 °C in October, then 10.0 °C in November. Rain averages about 108 to 110 mm a month from September to November. In autumn 2026 the east shore road and cycle path are closed from 14 September to 18 December, and the west shore Voie verte has works too. Both are described on the Lake Annecy page.
Winter highs stay near 5.6 °C to 7.6 °C, and the lows sit below zero. Dress in layers. Museums are closed on 25 December, 1 January and other public holidays.
Plan the rest of your trip
Pick a base and a route that fit your month.
Annecy weather: frequently asked questions
What is the best month to visit Annecy?
For swimming, July and August are the warmest months and the beaches are supervised. For walking and sightseeing with mild air, May, June and September have highs of 20.3 °C, 24.2 °C and 21.3 °C. There is no single best month.
Does it rain a lot in Annecy?
Rain is spread across the year. Monthly means range from 78.9 mm in February to 112.5 mm in December, and July averages 101.1 mm.
How warm is the lake in summer?
Water temperature varies through the year. A tourism listing showed 17 °C on 19 October 2026. Check the current reading before you swim.
Is Annecy worth visiting in winter?
Yes, if you like quiet days. Highs stay between 5.6 °C and 7.6 °C in January and February, and the market runs on Tuesday, Friday and Sunday all year. Some seasonal sights are closed.
Where do these climate figures come from?
They are long-term monthly means from the Météo-France station at Meythet, at 455 m. They describe the usual weather, not the weather on a given day.