Mayo DSP stargazing forecast — Saturday, August 15

Ballycroy, Ireland · Bortle 2 · 54.017, -9.717 · Snapshot generated Sat, 15 Aug 2026 02:05:08 GMT

No-go (High confidence)

Overcast: mean cloud 97%, minimum 83%. Sit this one out.

Best observing window tonight

No clear window of 2+ hours during tonight's astronomical night.

Astronomical night: Sat 10:09 p.m. → Sun 7:18 a.m.
Moon: Waxing crescent · 7% illuminated
Mean cloud (during night): 97% (min 83%)

Site

Mayo International Dark Sky Park covers the blanket bogs of Wild Nephin — one of Ireland's last true wilderness zones. The Ballycroy Visitor Centre runs regular star-parties and rents red-light kits.

Drive from Toronto: ≈ 3 h from Galway or Knock airports via the N59 to Ballycroy.

Best time of year: September through March for long nights; avoid the mid-summer twilight when it never gets fully dark.

Open the live 48-hour forecast →

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 Mayo DSP: /sites/mayo-dsp.txt
Structured site data: /sites/mayo-dsp.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=mayo-dsp updates continuously.