Seasonal Split of Summits
Successful summits split into spring (pre-monsoon), autumn (post-monsoon) and winter, decade by decade. Summer is omitted as it consistently accounts for fewer than 1% of summits. Decades are included if they have at least 20 recorded summits.
| Decade | Summits | Spring | Autumn | Winter | % Spring | % Autumn | % Winter |
|---|---|---|---|---|---|---|---|
| 1930s | 30 | 22 | 1 | 0 | 73.3% | 3.3% | 0.0% |
| 1950s | 194 | 129 | 55 | 0 | 66.5% | 28.4% | 0.0% |
| 1960s | 316 | 214 | 102 | 0 | 67.7% | 32.3% | 0.0% |
| 1970s | 801 | 364 | 425 | 12 | 45.4% | 53.1% | 1.5% |
| 1980s | 2225 | 911 | 1119 | 169 | 40.9% | 50.3% | 7.6% |
| 1990s | 4131 | 1667 | 2275 | 142 | 40.4% | 55.1% | 3.4% |
| 2000s | 9292 | 4983 | 4092 | 114 | 53.6% | 44.0% | 1.2% |
| 2010s | 13154 | 7245 | 5833 | 73 | 55.1% | 44.3% | 0.6% |
| 2020s | 9337 | 5421 | 3844 | 64 | 58.1% | 41.2% | 0.7% |