YozoraAtlas

How dark is the sky in Győr-Moson-Sopron?

Sky darkness for 4 towns and parks in Győr-Moson-Sopron, worked out from NASA satellite images of light at night (2025). 1 of them has skies of Bortle 4 or darker, where the Milky Way shows overhead. The darkest is Fertő-Hanság National Park (20.99, Bortle 4), the brightest Győr (18.75, Bortle 7). Milky Way season in Győr-Moson-Sopron runs May to July: on moonless nights the bright core stands clear of the horizon, climbing to about 13° at its highest.

19 Bortle class, 1 pristine to 9 city center park or dark-sky place city

Numbers like 21.95 or 16.97 are the brightness of the sky overhead on a clear, moonless night, in mag/arcsec². The scale runs backwards: a lower number means a brighter sky, from about 22 for a natural sky to about 17 in a city center.
How the readings are made

NASA satellite night-lights map of Győr-Moson-Sopron with every place marked

Darkest skies in Győr-Moson-Sopron

  1. Fertő-Hanság National ParkBortle 420.99

Among the places on this site. Plenty of land between them is just as dark, with no town or park to name it by.

Brightest city skies in Győr-Moson-Sopron

  1. GyőrBortle 718.75
  2. MosonmagyaróvárBortle 519.56
  3. SopronBortle 519.57

All 4 places in Győr-Moson-Sopron

Amber names are parks and certified dark-sky places. The figure is the Bortle class: 1 darkest, 9 city center.
Fertő-Hanság National Park4Győr7Mosonmagyaróvár5Sopron5