Cévennes stargazing forecast — Saturday, August 15

Best observing window tonight

Sun 2:00 a.m. – Sun 2:00 a.m. (1h, 26% mean cloud)

Astronomical night

Sat 10:51 p.m. → Sun 8:50 a.m.

Moon

Waxing crescent · 7% illuminated

Mean cloud (during night)

74%   (min 26%)

Site

Parc National des Cévennes is the largest Dark Sky Reserve in Europe by area — 3,560 km² of Occitanie granite plateau. The Causse Méjean gives 360° horizons at Bortle 2.

Drive from Toronto: ≈ 2 h from Montpellier or 3 h from Lyon via the A75.

Best time of year: April to October; the Causse can be snowbound in mid-winter.

Citations & data sources

• Open-Meteo Forecast API (cloud, humidity, wind, visibility)
• Open-Meteo astronomical data (sunrise, sunset, moon)
• Bortle scale reference for site darkness
• Editorial guide for Cévennes: /sites/cevennes-idsr.txt
• Structured site data: /sites/cevennes-idsr.json
• Live MCP server (AI agents): https://koohxdehsweadgdegrly.supabase.co/functions/v1/mcp

This is a build-time snapshot — the live forecast at https://ontarionightsky.com/?site=cevennes-idsr updates continuously.