Gruta Rei do Mato · CC BY-SA 4.0
The descent
The entrance, at 911 m.
The real relief above Gruta Rei do Mato, 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.
911m
Entrance altitude
from the 30 m relief model
21°C
Inside, all year
the yearly average outside, at the entrance
49m
Rock above
the highest point within 1.5 km
Inside and outside
21 °C inside, all year.
Deep inside, a cave keeps the average temperature of the year outside: about 21 °C here, in January and in August. In October the afternoon reaches 31 °C at the entrance, 9 °C warmer than inside: take a jacket. The best months to escape the heat are in February and from August to November.
- 27°18°Jan
- 27°18°Feb
- 26°17°Mar
- 26°16°Apr
- 26°13°May
- 26°12°Jun
- 26°12°Jul
- 28°13°Aug
- 31°15°Sep
- 31°17°Oct
- 28°17°Nov
- 27°18°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 Brazil
Gruta Rei do Mato is a cave in Brazil. The entrance is at 911 m.
Getting there.
- Wild cave: only with caving equipmentNo paths or lights inside. Go only with a caving club or a qualified guide.
- Sete Lagoasnearest town · 5.1 km in a straight line
- Tancredo Neves International Airport (CNF)nearest airport with scheduled flights · 37 km in a straight lineCar hire at CNF airport (Belo Horizonte)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.
- 1other cave entrances within 3 kmGruta Rei do Mato
- 2car parks within 2 km
- 36hotels and guesthouses within 8 kmLago Palace Hotel, Pousada Apolinário, Hotel Real and 33 more
- 9restaurants and cafés within 3 km
- springs within 2 km
- sinkholes within 3 km
- caving clubs and spots within 15 km
- viewpoints within 3 km
- marked hiking routes within 3 km
- climbing crags within 3 km
- named waterfalls within 4 km
- information boards and visitor centres within 3 km
- bus stops within 2 km
- campsites within 8 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
- Sete Lagoas5.1 km in a straight line
- Inhaúma11 km in a straight line
- Prudente de Morais14 km in a straight line
- Cachoeira da Prata18 km in a straight line
- Capim Branco18 km in a straight line
- Fortuna de Minas19 km in a straight line
- Matozinhos22 km in a straight line
Month by month
The weather outside, at the entrance.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 28 | 31 | 31 | 28 | 27 |
| Afternoon | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 28 | 31 | 31 | 28 | 27 |
| Night | 18 | 18 | 17 | 16 | 13 | 12 | 12 | 13 | 15 | 17 | 17 | 18 |
| Rain (mm) | 211 | 136 | 150 | 52 | 25 | 8 | 6 | 10 | 35 | 87 | 176 | 258 |
| Rainy days | 21 | 16 | 18 | 10 | 5 | 2 | 1 | 2 | 6 | 13 | 21 | 24 |
| Sun hours/day | 7.1 | 7.7 | 7.3 | 7.8 | 7.9 | 8.2 | 8.6 | 9.1 | 8.6 | 7.6 | 6.3 | 6.4 |
| Afternoon | Afternoon | Night | Rain (mm) | Sun hours/day | |
|---|---|---|---|---|---|
| Jan | 27 | 27 | 18 | 211 | 7.1 |
| Feb | 27 | 27 | 18 | 136 | 7.7 |
| Mar | 26 | 26 | 17 | 150 | 7.3 |
| Apr | 26 | 26 | 16 | 52 | 7.8 |
| May | 26 | 26 | 13 | 25 | 7.9 |
| Jun | 26 | 26 | 12 | 8 | 8.2 |
| Jul | 26 | 26 | 12 | 6 | 8.6 |
| Aug | 28 | 28 | 13 | 10 | 9.1 |
| Sep | 31 | 31 | 15 | 35 | 8.6 |
| Oct | 31 | 31 | 17 | 87 | 7.6 |
| Nov | 28 | 28 | 17 | 176 | 6.3 |
| Dec | 27 | 27 | 18 | 258 | 6.4 |
Averages 1991–2020 (NASA POWER) for a cell about 55 km wide, brought to the altitude of the entrance (911 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 | 190% | 161% | 135% | 117% | 139% | 32% | 65% | 88% | 21% | 185% | 36% | 54% |
| 2021 | 54% | 195% | 41% | 21% | 26% | 39% | 19% | 52% | 36% | 206% | 126% | 115% |
| 2022 | 176% | 206% | 6% | 48% | 112% | 18% | 10% | 23% | 99% | 86% | 92% | 111% |
| 2023 | 131% | 50% | 14% | 75% | 8% | 50% | 131% | 268% | 63% | 113% | 49% | 30% |
| 2024 | 88% | 61% | 73% | 49% | 14% | 29% | 10% | 6% | 3% | 132% | 93% | 78% |
| 2025 | 74% | 21% | 25% | 216% | 8% | 993% | 45% | 26% | 16% | 26% | 57% | 38% |
130% or more: wet month 70% or less: dry month
Where these figures come from
| Name, type, published depth and length, visitors | Wikidata (Q2301571) · 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 |
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.


