Austria Roman Klementschitz , Wien · CC BY-SA 3.0
The descent
The entrance, at 879 m.
The real relief above Grasslhöhle, measured on the Copernicus model every 30 m, and the cave going down at the same vertical scale.
The depth is the one published by those who explored it; the shape of the galleries is a sketch, not a survey. No depth has been published for this cave yet.
879m
Entrance altitude
published (Wikidata)
7°C
Inside, all year
the yearly average outside, at the entrance
348m
Rock above
the highest point within 1.5 km
Inside and outside
7 °C inside, all year.
Deep inside, a cave keeps the average temperature of the year outside: about 7 °C here, in January and in August. In July the afternoon reaches 24 °C at the entrance, 17 °C warmer than inside: take a jacket.
- -1°-8°Jan
- 2°-7°Feb
- 7°-4°Mar
- 13°1°Apr
- 17°6°May
- 22°11°Jun
- 24°13°Jul
- 23°12°Aug
- 18°7°Sep
- 12°2°Oct
- 6°-2°Nov
- 0°-7°Dec
Outside: afternoon and night averages for 1991–2020 (NASA POWER) brought to the altitude of the entrance. Inside: the yearly average, which deep parts of a cave keep. Near the entrance it follows the weather a little.
Cave in the Grazer Bergland in Styria
Grasslhöhle is a cave in Austria. The entrance is at 879 m.
Getting there.
- Wild cave: only with caving equipmentNo paths or lights inside. Go only with a caving club or a qualified guide.
- Arzbergnearest town · 2.6 km in a straight line
- Viewpointsnearest viewpoint · 1.2 km from the entrance
- Graz Airport (GRZ)nearest airport with scheduled flights · 29 km in a straight lineCar hire at GRZ airport (Feldkirchen bei Graz)Discover Cars · sponsored link↗
Plan the visit
Guided tours, a bed nearby, a car.
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
From above.
The ground above the cave, with the relief shaded, the line of the section and what people have mapped around the entrance.
N
1.5 km
Sentinel-2 cloudless 2016 (EOX, CC BY 4.0), 6.0 × 6.0 km, north up. The line is the section above. Points © OpenStreetMap contributors.
Around the entrance.
- 33other cave entrances within 3 kmKaterloch, Grasslhöhle, Rablloch and 30 more
- 2springs within 2 kmGösserquelle, Kohlquelle
- 6viewpoints within 3 km
- 26marked hiking routes within 3 kmSteirischer Mariazellerweg 06, Naaser Höhlenweg, Wanderweg 4a Stroßkreuzweg and 23 more
- 6climbing crags within 3 kmAlter Steinbruch, Gipslochwand, Herdplatte and 3 more
- 4car parks within 2 km
- 31information boards and visitor centres within 3 km
- 5bus stops within 2 km
- 1campsites within 8 kmStellplatz Harrer Hill
- 19hotels and guesthouses within 8 kmEderer Seminarhotel, Pension Christina, Frühstückspension Pösinger and 16 more
- 4restaurants and cafés within 3 km
- sinkholes within 3 km
- caving clubs and spots within 15 km
- named waterfalls within 4 km
Counted in OpenStreetMap, the map anyone can edit, around the entrance. A low number may just mean nobody has mapped it yet. © OpenStreetMap contributors (ODbL).
Towns nearby
- Arzberg2.6 km in a straight line
- Naas4.0 km in a straight line
- Mortantsch4.7 km in a straight line
- Passail4.9 km in a straight line
- Göttelsberg4.9 km in a straight line
- Stenzengreith5.6 km in a straight line
- Weiz6.0 km in a straight line
- Hohenau an der Raab6.1 km in a straight line
In our other atlases
What else is around Grasslhöhle.
The river at the entrance, the waterfalls, the lakes, the mountains and volcanoes above, the canyons, beaches and islands nearby — from our other atlases.
Peakyas22 mountains within 10 kmFigures from the sister sites' databases (Wikidata, HydroATLAS, GeoNames, NOAA, OpenStreetMap). Links open when each site is online.
Month by month
The weather outside, at the entrance.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon | -1 | 2 | 7 | 13 | 17 | 22 | 24 | 23 | 18 | 12 | 6 | 0 |
| Afternoon | -1 | 2 | 7 | 13 | 17 | 22 | 24 | 23 | 18 | 12 | 6 | 0 |
| Night | -8 | -7 | -4 | 1 | 6 | 11 | 13 | 12 | 7 | 2 | -2 | -7 |
| Rain (mm) | 32 | 40 | 43 | 52 | 90 | 104 | 107 | 110 | 96 | 61 | 56 | 42 |
| Rainy days | 6 | 7 | 9 | 10 | 14 | 15 | 16 | 14 | 11 | 10 | 9 | 8 |
| Sun hours/day | 2.7 | 4.0 | 4.9 | 5.8 | 5.9 | 6.5 | 7.0 | 6.5 | 5.0 | 4.3 | 2.6 | 2.3 |
| Snow on the ground (cm) | 16 | 14 | 8 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 6 | 14 |
| Afternoon | Afternoon | Night | Rain (mm) | Sun hours/day | |
|---|---|---|---|---|---|
| Jan | -1 | -1 | -8 | 32 | 2.7 |
| Feb | 2 | 2 | -7 | 40 | 4.0 |
| Mar | 7 | 7 | -4 | 43 | 4.9 |
| Apr | 13 | 13 | 1 | 52 | 5.8 |
| May | 17 | 17 | 6 | 90 | 5.9 |
| Jun | 22 | 22 | 11 | 104 | 6.5 |
| Jul | 24 | 24 | 13 | 107 | 7.0 |
| Aug | 23 | 23 | 12 | 110 | 6.5 |
| Sep | 18 | 18 | 7 | 96 | 5.0 |
| Oct | 12 | 12 | 2 | 61 | 4.3 |
| Nov | 6 | 6 | -2 | 56 | 2.6 |
| Dec | 0 | 0 | -7 | 42 | 2.3 |
Averages 1991–2020 (NASA POWER) for a cell about 55 km wide, brought to the altitude of the entrance (879 m) with the standard lapse rate. Not a forecast.
Photographs
Inside and around.
Recent years
Wet years, dry years.
Rain of each month as a share of the 1991–2020 average. A dry year means a lower river and hotter rock; a wet one, more water in the gorge.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 26% | 75% | 75% | 72% | 69% | 117% | 160% | 148% | 119% | 151% | 41% | 204% |
| 2021 | 149% | 56% | 46% | 65% | 156% | 44% | 86% | 107% | 44% | 68% | 135% | 136% |
| 2022 | 51% | 66% | 41% | 113% | 91% | 101% | 91% | 74% | 134% | 51% | 90% | 113% |
| 2023 | 266% | 55% | 159% | 164% | 154% | 111% | 212% | 160% | 26% | 150% | 131% | 209% |
| 2024 | 153% | 75% | 119% | 109% | 160% | 139% | 136% | 56% | 178% | 151% | 36% | 38% |
| 2025 | 86% | 63% | 219% | 156% | 90% | 55% | 139% | 59% | 125% | 83% | 107% | 59% |
130% or more: wet month 70% or less: dry month
Caves nearby.
Grasslhöhle
Austria
- —Depth
- —Galleries
- 879 mEntrance altitude
- 7 °CInside, all year
Dragon's Lair at Mixnitz
Austria · 16 km
- —Depth
- —Galleries
- 950 mEntrance altitude
- 6 °CInside, all year
Where these figures come from
| Name, type, published depth and length, visitors | Wikidata (Q1517294) · CC0 |
|---|---|
| The relief above, the entrance altitude, the section and the 3D model | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| Climate | NASA POWER, 1991–2020 |
| Entrances, springs, sinkholes, opening hours and what is around | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
| Rivers, waterfalls, lakes, mountains, canyons, beaches and islands nearby | Coastya, Lakeyas, Peakyas, Cascadyas, Islandyas, Riveryas |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
The family
Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers, canyons, caves, dark skies, viewpoints, birdwatching or forests?
Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.
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