Chacaltaya Mountain
High Andes mountain, former glacier and ski slope
High in the Bolivian Andes near La Paz, Chacaltaya was once a glacier ski site; visitors go for extreme high-altitude views, access to nearby mountain trails and glimpses of Andean glacial retreat.
Chacaltaya at a Glance#
Admission: Free (mountain / outdoor area)
About Chacaltaya#
A high Andean mountain near La Paz, Bolivia, rising to roughly 5,421 metres and long known for its high-altitude ski station and scientific observation activity. The summit ridge and former ski infrastructure are visible from the surrounding altiplano.
The mountain was notable in the 20th century for hosting one of the world’s highest ski areas and for scientific and glaciological studies; rapid glacial retreat in the early 21st century ended regular skiing and changed local conditions. Hikers and day visitors access viewpoints from the roadheads a short drive from La Paz and from local altiplano settlements.
Located on the Bolivian Altiplano north of the city of La Paz, the mountain sits within the La Paz Department and is reachable by road from the city, generally within a one-to-two hour drive depending on route and traffic.
- Elevation and ski history: Summit elevation about 5,421 metres, making it one of the higher accessible peaks near La Paz and previously home to a high-altitude ski resort.
- Glacial retreat: The glacier that once enabled skiing has largely disappeared in the 21st century, altering access and conditions for visitors and scientific work.
What to See#
- Summit and ski station: The summit ridge and former ski station area that sit above 5,400 metres, historically used for high-altitude skiing and climatological observations.
- Access points: Lower access roadheads and observation points reached from the road linking La Paz with higher altiplano settlements; these form the primary approach for visitors and researchers.
Tips for Visiting Chacaltaya#
- Plan your visit in the dry season (May-October) and start very early in the day to avoid afternoon storms that are common at high altitude.
- Travel from La Paz only with experienced guides or operators who provide proper acclimatization time and high-altitude transport-many day trips include a stop at viewpoints rather than attempting technical routes to the summit.
- Don't expect a ski area or glacier like in historical photos: the Chacaltaya glacier has largely disappeared, so focus on panoramic views of the Altiplano and nearby peaks rather than glacier activities.
Best Time to Visit Chacaltaya#
Visit during the Bolivian dry season (roughly May-October) for the most stable weather and clearer high-altitude conditions, keeping in mind it is cold year-round.
Weather & Climate near Chacaltaya#
Chacaltaya's climate is classified as Tundra - Tundra climate with cold summers (peaking in November) and freezing winters (coldest in July). Temperatures range from -11°C to 12°C. Moderate rainfall (792 mm/year) with a pronounced dry season.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | - | -3° - 10° | 1° | 156 mm | - | - | 2.8 m/s | - | - |
| February | - | -2° - 9° | 1° | 131 mm | - | - | 2.7 m/s | - | - |
| March | - | -3° - 9° | 1° | 115 mm | - | - | 2.4 m/s | - | - |
| April | - | -5° - 10° | 2° | 44 mm | - | - | 2.3 m/s | - | - |
| May | - | -8° - 10° | -2° | 20 mm | - | - | 2.4 m/s | - | - |
| June | - | -10° - 9° | -4° | 12 mm | - | - | 2.8 m/s | - | - |
| July | - | -11° - 9° | -5° | 11 mm | - | - | 2.8 m/s | - | - |
| August | - | -10° - 10° | -3° | 16 mm | - | - | 3.0 m/s | - | - |
| September | - | -7° - 10° | -1° | 40 mm | - | - | 3.0 m/s | - | - |
| October | - | -6° - 12° | 0° | 47 mm | - | - | 2.8 m/s | - | - |
| November | - | -4° - 12° | 1° | 77 mm | - | - | 3.0 m/s | - | - |
| December | - | -3° - 11° | 1° | 123 mm | - | - | 2.9 m/s | - | - |
