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DelRoble Caleu CC BY-SA 4.0 Wikimedia Commons

Cerro El Roble

Mountain

Cerro El Roble in Chile's Valparaíso Region offers steep hiking trails and an astronomical observatory; visitors come for mountain panoramas, native forest patches and seasonal trekking.

Cerro El Roble Map data © OpenStreetMap contributorsValparaísoLa SebastianaQuinta VergaraLa DéfenseHistoric Quarter of the Seaport City of ValparaísoCerro El Roble

Cerro El Roble essentials

Country: Chile
Driest months: Dec-Feb
Pay in: Peso ($)
Emergency: 133

Cerro El Roble at a Glance

When to Go

Best Time to Visit Cerro El Roble

Best visited in the Southern Hemisphere spring and summer when trails dry out; weather on the coastal range changes fast so plan for wind and fog.

Spring (September-November)
Sep-Nov · 8-18°C
Wildflowers and clearer trails after winter rains; unstable weather still possible.
Summer (December-March)
Dec-Mar · 12-25°C
Drier skies and long daylight make ridge routes pleasant, though coastal fog can linger in mornings.

Weather & Climate near Cerro El Roble

Climate

Cerro El Roble's climate is classified as Warm-Summer Mediterranean - Warm-Summer Mediterranean climate with cool summers (peaking in January) and cold winters (coldest in June). Temperatures range from 0°C to 20°C. Semi-arid with limited rainfall with a pronounced dry season.

Air Quality: AQI 51 Moderate
Temperature & Rainfall
Temperature Range
20°
Warmest Month
0°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January - 7° - 20° 14° 2 mm - - 3.9 m/s - -
February - 7° - 20° 13° 8 mm - - 3.6 m/s - -
March - 5° - 18° 12° 4 mm - - 3.5 m/s - -
April - 3° - 16° 8° 20 mm - - 3.3 m/s - -
May - 2° - 12° 5° 64 mm - - 3.4 m/s - -
June - 0° - 9° 1° 109 mm - - 3.6 m/s - -
July - 0° - 9° 2° 71 mm - - 3.4 m/s - -
August - 0° - 10° 2° 89 mm - - 3.5 m/s - -
September - 0° - 11° 3° 25 mm - - 3.5 m/s - -
October - 2° - 13° 5° 24 mm - - 3.6 m/s - -
November - 4° - 16° 8° 11 mm - - 3.8 m/s - -
December - 6° - 19° 12° 2 mm - - 4.0 m/s - -
Getting There & Around

How to Get to Cerro El Roble

Drive: From Santiago take Route 5 north to the La Calera or Llay-Llay exits, then follow local roads toward Las Palmas/Olmué; final dirt tracks require a high-clearance vehicle. Nearest larger towns: Olmué (~25-35 km) and Quillota (~30-40 km).

Trail access: Several trailheads start from rural roads; check with local hiking clubs in Quillota or Olmué for current access conditions and recommended routes.

Tips for Visiting Cerro El Roble

  • Start before dawn to watch low clouds peel off the coastal range - summit views clear quickly after sunrise.
  • If attempting the longer ridgeline routes, use a GPS track; mobile signal is patchy on the flanks.
  • Pack layers: wind from the Pacific can be cold even on otherwise warm Valparaíso days.