Dhaulagiri — “White Mountain” in Sanskrit — was the world’s highest known peak for 30 years before Annapurna and then Everest were surveyed accurately. It stands in complete isolation from other major Himalayan peaks, sitting directly in the path of both pre-monsoon and post-monsoon weather systems that funnel through the Kali Gandaki gorge. The result is a mountain with some of the most extreme and unpredictable weather of any 8,000m peak — and a 22% success rate that reflects this reality more than technical difficulty alone.

How to read these numbers: Success is defined as reaching the true summit (8,167m). Data from The Himalayan Database covers all permitted attempts 1960–2025. The Northeast Ridge standard route accounts for the vast majority of attempts; the South Face and other lines are included in the overall figure but represent a small fraction of total attempts.

Dhaulagiri’s summit window is among the most compressed of any 8,000m peak. The mountain’s isolated position in the path of both pre-monsoon and post-monsoon weather systems means the stable windows are short and can close within hours. May is the statistical peak, with the first three weeks producing the overwhelming majority of summits.

The critical insight from the timing data is not just which month but which conditions within May: teams on Dhaulagiri summit at roughly twice the rate when a confirmed high-pressure window of at least 3 days is forecast before departure from Camp 4. The mountain’s position means forecasts degrade faster than on Everest — a 5-day forecast that looks clean at base camp can become unreliable by day 3 on the summit ridge. Operators with dedicated Dhaulagiri weather subscriptions consistently outperform those relying on generic Himalayan forecasts.

Dhaulagiri’s Northeast Ridge is its only viable standard route and sees the vast majority of all attempts. The South Face and other technical lines are committing expeditions for elite alpinists and carry significant objective hazard from hanging seracs and mixed terrain at extreme altitude.

The Northeast Ridge’s 24% rate is the lowest “standard route” success rate of any 8,000m peak in this database except K2. The Northeast Buttress above Camp 3 presents sustained mixed climbing at altitude that demands both technical proficiency and excellent weather — the two variables that most rarely align simultaneously on Dhaulagiri.

Dhaulagiri has limited commercial guiding relative to Everest or Manaslu. Most teams are semi-independent expeditions with high-altitude Sherpa support. The success rate difference between supported and unsupported teams is primarily driven by weather judgment and rope-fixing infrastructure above Camp 3, not by fundamentally different approach logistics.

Dhaulagiri’s experience data closely mirrors Makalu’s: technical alpine proficiency combined with extreme altitude experience is the strongest predictor, and prior experience specifically in Karakoram or high-Himalayan weather is more valuable than equivalent altitude experience on more weather-sheltered peaks.

From The Himalayan Database expedition records and post-expedition reports, 1990–2025, Northeast Ridge.

Dhaulagiri has one of the most challenging rescue environments in the Himalayas. Helicopter landing zones exist in the lower Myagdi Khola valley, but above Camp 1 all rescues require human carries over serious glacier terrain before reaching an extraction point. The extreme weather that characterizes the mountain often prevents helicopter access for days even when an evacuation is urgent.

Weather-related fatalities — from storms catching climbers in exposed positions on the upper ridge — account for a larger share of Dhaulagiri deaths than on any other 8,000m peak in this database. The mountain’s capacity to generate violent, rapid-onset storms is the defining safety challenge, not objective terrain hazard. Expedition insurance with the maximum available medical evacuation limit is non-negotiable.

Dhaulagiri’s success rate has improved modestly from the pioneering era, but remains the most weather-dependent of any 8,000m peak in this database. Year-to-year variance is the largest in the database — a good weather year produces 35%+ success rates while a storm-dominated season can see rates below 10%. The long-term trend is upward but driven almost entirely by better weather forecasting, not by changes to the mountain itself.

The improvement in Dhaulagiri’s success rate correlates more strongly with the introduction of dedicated Himalayan weather forecasting services in the mid-1990s than with any other factor. On a peak where weather is the primary determinant of success, the ability to identify and act on a reliable 3-day window has been transformative. The plateau since 2000 reflects the limits of what forecasting can achieve — the weather itself has not become more predictable.