South
The most winter and year-round sun. Great for a living room you use during the day, but a south-west flat overheats in summer without shading.
Living · Topic
The sunniest spots are in Liebenau, Puntigam and St. Peter.
A south-facing label on paper does not mean sun in your living room. In a Europe-wide RE/MAX survey, about half of Austrians said they pay particular attention to light and natural brightness when buying, ahead of the location itself. What actually matters is whether neighbouring buildings and terrain take the sun away. wohnwahn calculates exactly that for every inhabited spot in Graz, from official building heights (BEV) on OpenStreetMap footprints and the sun path.
And because a district is not an address, and the floor often matters more than the compass direction: the map shows the sunny row of houses and the shaded courtyard three streets away. For the exact address, the sun check calculates each floor separately.

Ranked by the share of homes that get good sun. For large districts the range matters, because dense centres and loose edges lie far apart within the same district.
Hours of sunlight per location from official building heights (BEV) on OpenStreetMap footprints, the terrain horizon and the sun path, for a typical 3rd floor · as of: September 2026
Method: direct sun on a typical 3rd floor per inhabited 250 m cell, computed from official building heights (BEV) on OpenStreetMap footprints, the terrain horizon from the official elevation model and the sun path, clipped to the real boundary. Winter discriminates most (a dense courtyard gets near 0 hours, a loose row 8). Even a shaded district has sunny attics: the map shows the exact spot, the sun check each floor. Prices: asking prices per m² (condos), immopreise.at / derStandard-Preisspiegel, as of Dezember 2025.
Currently 39 listings sit on wohnwahn in a spot with real sunlight, sunniest first. The badge says how sunny it is.
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Gold means sunny, blue means shaded. Every square is an inhabited 250 m cell with its typical hours of sunlight on the 3rd floor, from official building heights (BEV) on OpenStreetMap footprints, the terrain horizon and the sun path.
Only inhabited cells are coloured: where nobody lives, we do not calculate. Tap the map for the hours of sunlight at that exact spot, in summer and in winter.
Sun usually means the edge of town. These districts prove otherwise: a high share of sunny homes AND within 25 minutes of the centre (Jakominiplatz) by transit.
There is no universal best direction, it depends on the room and how you live.
The most winter and year-round sun. Great for a living room you use during the day, but a south-west flat overheats in summer without shading.
Afternoon and evening sun, lovely after work. The downside is summer heat late in the day: check the heat load too.
Morning sun, bright at breakfast and cooler in the afternoon. A calm choice for bedrooms.
Bright but without direct sun: even light for working, cool in summer and good for sleeping. Not dark, just not sunlit.
A ground-floor flat can get almost no sun despite facing south, if the neighbouring buildings block it, while the attic above has light all day. Our map calculates a typical 3rd floor. For your exact address and floor, the sun check shows when the sun arrives and leaves, and which neighbour takes it away.
We calculate where people live: building heights come from the official BEV elevation data, footprints from OpenStreetMap. Where no building is recorded there is no cell, and a missing cell means “not calculated”, not “no sun”. For a single address the sun check works regardless.
We calculate the sun a 3rd-floor spot receives from all directions, not the window orientation. The ground floor is darker, the attic sunnier, a south window sunnier still: the sun check is floor and direction specific.
A south-west flat overheats in summer. Sun and heat go together: the cool-living page shows the heat load and the trees around the address.
We calculate DIRECT sun: what neighbouring buildings block and what the horizon blocks, terrain included. Diffuse skylight and reflections are not counted, so a north-facing room is bright but unlit by the sun. Trees are not counted either.
There is no universal best, it depends on the room. South brings the most winter and year-round sun, west the afternoon and evening sun (but summer heat), east the morning sun. North is bright but without direct sun: cool in summer and good for sleeping.
No. A south-west flat overheats badly in summer, and without external shading it gets uncomfortably hot. More sun is not automatically a plus: for the summer heat, wohnwahn shows the heat load and the trees around the address.
Yes, often more than the compass direction. A ground-floor flat can get almost no sun despite facing south if the neighbouring buildings block it, while the attic above it has light all day. Our map calculates a typical 3rd floor; the sun check calculates each floor separately.
As a rule of thumb, the DIN 5034 standard asks for at least 1 hour of direct sun on a winter day (17 January) and around 4 hours in spring and autumn, and only one living room needs to be sufficiently sunlit. In dense period courtyards, near 0 hours on the 3rd floor in winter is realistic; on loose outer locations, 6 to 9 hours in summer.
Best to view at two different times of day, or check the real hours of sunlight per floor in advance with the wohnwahn sun check. It shows, for any address, when the sun arrives and leaves, and which neighbouring building takes it away.
They rely on the provider’s entry, usually a rough tick for “south-facing balcony”. No one calculates the actual shading by neighbouring buildings floor by floor. wohnwahn does exactly that, from official building heights, the terrain horizon and the sun path.
More honest data on where to live well in Graz and the surrounding area.
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See the real hours of sunlight, the heat load and the shading by neighbouring buildings before the viewing. Free and independent.
Check the sun at any address →The flip side of sun: cool living in Graz →How wohnwahn rates locations →Quiet living →Green living →Living by the water →Family-friendly →
Sources: buildings from official building heights (BEV) on OpenStreetMap footprints, terrain horizon from the official elevation model, sun path (astronomy) · transit: own routing on the Graz Linien (Styrian transit) and ÖBB timetables · prices: immopreise.at / derStandard-Preisspiegel. Refreshed monthly.