Half Dome
United States · California
One of Yosemite's most iconic hikes, culminating in a cable-assisted climb to the famous granite dome summit.
Generating AI safety verdict…
Trailhead Conditions
California, United States · 1199m
Friday, November 6 at 11:18 AM
Feels like 0°C
Clear sky
Humidity
59%
Wind
10 km/h E
Gusts
10 km/h
Pressure
1020 hPa
Dew Point
-2°C
Cloud Cover
0%
Visibility
10.0 km
Precip
0 mm
48-Hour Forecast
14-Day Forecast
Is Half Dome safe to hike right now?
The AI safety verdict above is updated every 4 hours using live weather data from MET Norway at both the trailhead (1,199m) and the summit (2,694m). A GO verdict means current conditions are suitable for the trek. CAUTION means proceed with awareness of specific risk factors shown above. NO-GO means conditions are currently inadvisable — check back after the weather window passes.
How difficult is Half Dome?
Half Dome is rated hard. It demands strong fitness, prior high-altitude hiking experience, and careful acclimatisation. Altitude sickness is a real risk above 3,500m. The typical completion time is 1 day for a short trek.
What is the elevation of Half Dome?
The trailhead starts at 1,199 metres above sea level in California, United States. The summit or highest point reaches 2,694 metres — a net elevation gain of 1,495 metres.
What gear do I need for Half Dome?
The packing list in the AI verdict above is tailored to the current forecast. As a baseline for Half Dome in United States: waterproof jacket and trousers, trekking poles, sturdy boots, sun protection, and a first aid kit.
Weather data: MET Norway Locationforecast 2.0 (CC BY 4.0) · AI verdicts by Anthropic Claude