Latvia LZ6387 · CC BY-SA 3.0
The descent
The entrance, at 27 m.
The real relief above Riežupe Sand Caves, 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.
27m
Entrance altitude
from the 30 m relief model
7°C
Inside, all year
the yearly average outside, at the entrance
38m
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 22 °C at the entrance, 15 °C warmer than inside: take a jacket. The wettest months are from July to August: water rises fast underground, so never go in without a guide after heavy rain.
- -1°-5°Jan
- 0°-5°Feb
- 3°-3°Mar
- 10°1°Apr
- 16°6°May
- 19°11°Jun
- 22°14°Jul
- 22°14°Aug
- 17°10°Sep
- 10°5°Oct
- 5°2°Nov
- 2°-2°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 Latvia
Riežupe Sand Caves is a cave in Latvia. The entrance is at 27 m. It has an underground river.
Getting there.
- Wild cave: only with caving equipmentNo paths or lights inside. Go only with a caving club or a qualified guide.
- Kuldīganearest town · 4.1 km in a straight line
- Riežupes ielejas skatu vietanearest viewpoint · 0.3 km from the entrance
- Riga International Airport (RIX)nearest airport with scheduled flights · 121 km in a straight lineCar hire at RIX airport (Riga)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.
The water
The Venta runs highest from October to April.
The Venta carries about 2.4 m³/s on average here. It runs highest from October to April.
- 3.3 m³/sJan
- 2.7 m³/sFeb
- 2.6 m³/sMar
- 4.1 m³/sApr
- 2.2 m³/sMay
- 1.1 m³/sJun
- 1.5 m³/sJul
- 2.3 m³/sAug
- 2.0 m³/sSep
- 4.3 m³/sOct
- 5.1 m³/sNov
- 3.6 m³/sDec
From about 1.1 m³/s in the lowest month to 5.1 m³/s in the highest. Its basin above this point covers 201 km².
Follow the Venta from source to mouth on Riveryas
Estimate: long-term flow from the HydroATLAS model (WaterGAP, 1971–2000) shaped by the monthly rain, snow and temperature of the area (NASA POWER). Dams change it. Not a forecast.
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 kmRiežupes smilšu alas
- 1springs within 2 kmDzelzavots
- 2viewpoints within 3 kmGājēju tilts pār Riežupi, Riežupes ielejas skatu vieta
- 1marked hiking routes within 3 kmE11 section 93: Kuldīga – Renda
- 3named waterfalls within 4 kmRiežupes ūdenskritums, Trejrumbiņa, Veldzes ūdenskritums
- 3car parks within 2 km
- 4information boards and visitor centres within 3 km
- 2campsites within 8 km
- 14hotels and guesthouses within 8 kmMetropole, Sauleskalni, Virkas muiža and 11 more
- sinkholes within 3 km
- caving clubs and spots within 15 km
- climbing crags within 3 km
- bus stops within 2 km
- restaurants and cafés within 3 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
- Kuldīga4.1 km in a straight line
In our other atlases
What else is around Riežupe Sand Caves.
The river at the entrance, the waterfalls, the lakes, the mountains and volcanoes above, the canyons, beaches and islands nearby — from our other atlases.
Figures 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 | 0 | 3 | 10 | 16 | 19 | 22 | 22 | 17 | 10 | 5 | 2 |
| Afternoon | -1 | 0 | 3 | 10 | 16 | 19 | 22 | 22 | 17 | 10 | 5 | 2 |
| Night | -5 | -5 | -3 | 1 | 6 | 11 | 14 | 14 | 10 | 5 | 2 | -2 |
| Rain (mm) | 53 | 40 | 39 | 35 | 42 | 58 | 73 | 72 | 55 | 69 | 66 | 59 |
| Rainy days | 13 | 10 | 11 | 10 | 10 | 12 | 13 | 14 | 11 | 14 | 14 | 14 |
| Sun hours/day | 0.1 | 1.7 | 4.7 | 7.8 | 10.1 | 10.4 | 9.8 | 8.0 | 5.5 | 2.5 | 0.2 | 0.0 |
| Snow on the ground (cm) | 17 | 17 | 14 | 4 | 0 | 0 | 0 | 0 | 0 | 2 | 7 | 14 |
| Afternoon | Afternoon | Night | Rain (mm) | Sun hours/day | |
|---|---|---|---|---|---|
| Jan | -1 | -1 | -5 | 53 | 0.1 |
| Feb | 0 | 0 | -5 | 40 | 1.7 |
| Mar | 3 | 3 | -3 | 39 | 4.7 |
| Apr | 10 | 10 | 1 | 35 | 7.8 |
| May | 16 | 16 | 6 | 42 | 10.1 |
| Jun | 19 | 19 | 11 | 58 | 10.4 |
| Jul | 22 | 22 | 14 | 73 | 9.8 |
| Aug | 22 | 22 | 14 | 72 | 8.0 |
| Sep | 17 | 17 | 10 | 55 | 5.5 |
| Oct | 10 | 10 | 5 | 69 | 2.5 |
| Nov | 5 | 5 | 2 | 66 | 0.2 |
| Dec | 2 | 2 | -2 | 59 | 0.0 |
Averages 1991–2020 (NASA POWER) for a cell about 55 km wide, brought to the altitude of the entrance (27 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 | 64% | 137% | 128% | 45% | 90% | 108% | 93% | 75% | 74% | 100% | 67% | 58% |
| 2021 | 122% | 30% | 107% | 105% | 135% | 44% | 80% | 179% | 60% | 80% | 97% | 102% |
| 2022 | 161% | 174% | 10% | 110% | 144% | 143% | 79% | 107% | 54% | 49% | 45% | 102% |
| 2023 | 153% | 104% | 137% | 59% | 45% | 137% | 89% | 223% | 88% | 191% | 101% | 127% |
| 2024 | 79% | 151% | 62% | 157% | 138% | 128% | 197% | 110% | 87% | 60% | 68% | 92% |
| 2025 | 166% | 56% | 74% | 64% | 130% | 123% | 144% | 85% | 84% | 105% | 59% | 74% |
130% or more: wet month 70% or less: dry month
Caves nearby.
Riežupe Sand Caves
Latvia
- —Depth
- —Galleries
- 27 mEntrance altitude
- 7 °CInside, all year
Zalsvasis spring
Lithuania · 181 km
- —Depth
- —Galleries
- 31 mEntrance altitude
- 6 °CInside, all year
Where these figures come from
| Name, type, published depth and length, visitors | Wikidata (Q4992559) · 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 |
| River flow and basin | HydroATLAS / RiverATLAS v1.0 (Linke et al. 2019) · CC BY 4.0 |
| 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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Every lake on Earth: water temperature, ice, depth and the shore.Visit 
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Every summit in 3D: summit weather, the 0 °C line, huts and trails.Visit 
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Every waterfall: height, flow month by month and when it roars.Visit 
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Every island from the sea up: size, sea temperature, ferries and 3D.Visit 
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Every river from source to sea: the journey, the flow and the basin in numbers.Visit 
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Every canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Visit 
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Every cave with its real depth and length: the rock above, the temperature inside all year, and how to visit.You are here
dark skies
Where the night is still dark: the sky of every place, the Milky Way month by month, the Moon, eclipses and auroras.Coming soonVisit 
viewpoints
Every viewpoint with its real 360° panorama: the peaks you can name, how far you see and where the sun sets.Coming soonVisit 
birdwatching
Every bird sanctuary and wetland with the species recorded month by month: who is resident, who comes for the summer, who only passes through.Coming soonVisit 
forests
Every forest with its land-cover rings, what grows and lives in it, and the best months to walk it.Coming soonVisit