Skip to main content
Auvergne-Rhône-Alpes

Northern lights in Annecy tonight

Real-time aurora forecast for Annecy (Auvergne-Rhône-Alpes) - latitude 45.90° N, estimated Kp threshold 9.

Kp index
6.3
moderate
Hemispheric power
North35GW
South38GW

Source: app.pulsar-si.com

Tonight in Annecy
Very unlikely
Based on Kp 6.3 and Annecy's latitude.

Seeing the northern lights from Annecy

Annecy, at 45.9° N in the heart of the Alps, combines a moderate latitude with a mountainous environment that offers exceptional altitude observation points. Auroras become visible from Kp 7.5. The Aravis and Bauges massifs give access to skies that are rare in France, and Lake Annecy provides a photogenic foreground.

Observation conditions in Annecy

Bortle 7 in the city. The Glières plateau (Bortle 3, 25 km east) and the Semnoz (Bortle 4, 12 km south) are sought-after by amateur astronomers. The Croix de Bauzon and the Aravis pass offer altitude horizons. Dry winter air provides exceptional transparency, particularly above 1500 m.

Recent auroras from Annecy

10-11 May 2024 (Kp 9): spectacular red aurora over the lake, viral photos from the Sevrier reedbed. 24 March 2024 (Kp 8): observations from the Semnoz. 5 November 2023 (Kp 7): sightings from the Glières plateau.

Local conditions

Light pollution
Bortle 5 of 9
SQM 19.56 mag/arcsec²
Nearest darker sky
Annecy
2 km · Bortle 3

Frequently asked questions

Can you see the northern lights from Annecy?
Yes, but rarely. Typically a Kp index of ≥ 9 is needed for the aurora to become visible from Annecy (latitude 45.9° N). Major geomagnetic storms (Kp 8-9) that reach this latitude happen only a handful of times per 11-year solar cycle.
What Kp index is needed to see auroras from Annecy?
The approximate Kp threshold for Annecy is 9. Below that, auroras stay confined to high latitudes (Norway, Scotland). Above it, they gradually extend southward. A Kp of 10 gives a fair chance, 11 a strong one.
When is the best time to watch from Annecy?
Auroras are a nighttime phenomenon, best observed between roughly 10 PM and 2 AM local time, when the geomagnetic pole is tilted towards the Earth's night side. In practice, peaks depend on when a coronal mass ejection arrives - activity can spike at any hour.
Where around Annecy offers better conditions?
Move at least 40-60 km north of Annecy to escape urban light pollution and gain 1-2 magnitudes of limiting magnitude.

Nearby cities

Mobile app

Get an aurora alert in Annecy

Automatic notification the moment the Kp index crosses the visibility threshold for Annecy. Free alerts, forecasts tuned to your exact address.