Half Dome
Overview
Half Dome is Yosemite's most iconic hike — a grueling 14-mile round trip that culminates in a cable-assisted scramble up a 400-foot granite dome. The final ascent uses steel cables bolted into the rock, requiring upper body strength and nerve. At the summit, you'll stand on one of the most recognizable formations in the world with 360° views of Yosemite Valley, Tenaya Canyon, and the High Sierra. A permit is required for the cables.
Duration
1 Day
Distance
22 km (14 miles)
Max Altitude
2,694m (8,836 ft)
Best Season
May-Oct
Highlights
- Climb the iconic Half Dome cables
- 360° views from the summit of Yosemite Valley
- Pass Vernal and Nevada Falls
- Walk through Yosemite's legendary granite landscape
- One of America's most sought-after day hikes
- Witness the geology that inspired John Muir
Itinerary
Half Dome via Mist Trail
Start at Happy Isles. Climb Mist Trail past Vernal Fall (304 steps) and Nevada Fall. Continue through Little Yosemite Valley to the sub-dome. Ascend the cables to the summit. Descend via same route or John Muir Trail.
Safety Information
Cable section is dangerous when wet. Lightning risk at summit — descend immediately if storm approaches. Permit required. Strong fitness needed. Several fatalities have occurred.
Nearest Hospital
Yosemite Medical Clinic
Emergency Contacts
- Yosemite SAR: 209-379-1992
- 911
Packing List
Essentials
- 3+ liters water
- Snacks/lunch
- Headlamp
- Permit (printed)
- Gloves (for cables)
Safety
- First aid kit
- Map/GPS
- Emergency whistle
- Rain jacket (storms can hit fast)
Clothing
- Moisture-wicking layers
- Sturdy hiking boots with grip
- Sun hat
- Light gloves for cables
Weather by Month
| Month | High | Low | Rainfall | Rating |
|---|---|---|---|---|
| Jan | 45°F | 25°F | Snow | Avoid |
| Feb | 48°F | 28°F | Snow | Avoid |
| Mar | 55°F | 32°F | Snow/Rain | Avoid |
| Apr | 62°F | 38°F | Moderate | Moderate |
| May | 72°F | 45°F | Low | Best |
| Jun | 82°F | 52°F | Low | Best |
| Jul | 90°F | 58°F | Low | Best |
| Aug | 88°F | 56°F | Low | Best |
| Sep | 80°F | 50°F | Low | Best |
| Oct | 68°F | 40°F | Low | Moderate |
| Nov | 52°F | 32°F | Snow | Avoid |
| Dec | 42°F | 22°F | Snow | Avoid |