Here is a list of mountains with some statistics and the best climbing season. The list is not comprehensive and i will be adding more as and when i gather more information.

8,000 and above
Mountain Ht (m/ft) Grade Days J F M A M J J A S O N D
Everest 8,848 / 29,029 4D 60+
K2 8,611 / 28,251 5E 60+
Kangchenjunga 8,586 / 28,169 ? 60+
Lhotse 8,516 / 27,940 4D 60+
Makalu 8,485 / 27,838 5E 60+
Cho Oyu 8,188 / 26,864 3D 40+
Dhaulagiri 8,167 / 26,795 5E 60+
Manaslu 8,163 / 26,781 4D 60+
Nanga Parbat 8,126 / 26,660 5E 60+
Annapurna I 8,091 / 26,545 5E 60+
Gasherbrum I 8,080 / 26,509 5E 60+
Broad Peak 8,051 / 26,414 5E 60+
Gasherbrum II 8,035 / 26,362 5E 50+
Shishapangma 8,027 / 26,335 5E 40+

7,000 to 8,000
Mountain Ht (m/ft) Grade Days J F M A M J J A S O N D
Muztagh Ata 7,546 / 24,757 2D 30
Annapurna IV 7,525 / 24,688 3D 30
Ismoil Somoni 7,495 / 24,590 4C 30
Peak Pobeda 7,439 / 24,406 5D 30
Putha Hinchuli 7,246 / 23,772 2D 32
Pumori 7,161 / 23,495 ? 35
Peak Lenin 7,134 / 23,405 2D 22
Nun / Kun 7,135 / 23,409 4C 25
Baruntse 7,129 / 23,379 3D 34
Himlung Himal 7,126 / 23,379 3D 28
Satopanth 7,075 / 23,212 4C 28
Spantik 7,027 / 23,054 ? 25
Khan Tengri 7,010 / 22,999 5C 22

6,000 to 7,000
Mountain Ht (m/ft) Grade Days J F M A M J J A S O N D
Aconcagua 6,962 / 22,841 2C 21
Ojos Del Salado 6,893 / 22,615 2C 15
Ama Dablam 6,812 / 22,349 5D 30
Lungser/Chamser Kangri 6,666 / 21,870 2A 20
Shivling 6,543 / 21,467 6C 30
Bhagirathi II 6,512 / 21,365 3C 24
Sudarshan Parbat 6,507 / 21,349 3C 22
Mera Peak 6,476 / 21,247 2B 22
Cholatse 6,440 / 21,128 5D 30
Kang Yatse I 6,400 / 20,997 3D 15
Mentok Kangri II 6,210 / 20,374 2A 24
Tian Shan 6,200 / 20,341 3C 18
Denali 6,194 / 20,321 3D 24
Island Peak 6,189 / 20,305 3B 20
Kyajo Ri 6,186 / 20,295 3C 22
Stok Kangri 6,123 / 20,088 1A 14
Lobuche 6,119 / 20,075 2B 20
Laila Peak 6,096 / 20,000 4C 20

5,000 to 6,000
Mountain Ht (m/ft) Grade Days J F M A M J J A S O N D
Mt. Logan 5,959 / 19,551 ? 25
Cotopaxi 5,897 / 19,347 2A 20
Mt. Kilimanjaro 5,895 / 19,341 1A 10
Mt. Elbrus 5,642 / 18,510 2C 12
Mt. Damavand 5,610 / 18,406 2A 10
Kalla Pathar 5,545 / 18,192 2A 15
Haba Xueshan 5,396 / 17,703 2A 15
Dykh-Tau 5,205 / 17,077 4A 12
Mt. Kenya 5,199 / 17,057 2A 10
Mt. Ararat 5,137 / 16,854 2A 10
Mt. Stanley 5,109 / 16,762 ? 10
Mt. Kazbek 5,033 / 16,512 2B 6

4,000 to 5,000
Mountain Ht (m/ft) Grade Days J F M A M J J A S O N D
Mt. Vinson 4,897 / 16,067 3C 20+
Carstensz Pyramid 4,884 / 16,024 5B 12
Mont Blanc 4,810 / 15,781 4B 8
Matterhorn 4,478 / 14,692 3A 9
Mt. Whitney 4,421 / 14,505 1A 9
Mt. Rainier 4,394 / 14,417 2A 5-8
Mt. Khuiten 4,375 / 14,354 2A 16
Jungfrau 4,158 / 13,642 2B 2-5
Mt. Kinabalu 4,096 / 13,438 1A 3

3,000 to 4,000
Mountain Ht (m/ft) Grade Days J F M A M J J A S O N D
Eiger 3,970 / 13,020 3C 2
Mt. Fuji 3,776 / 12,388 1A 6
Mt. Cook 3,724 / 12,218 5D 6

Notes

There are so many mountains to list as we reach the 4000ers. I have only listed some that is most popular.

Some mountains have multiple routes to the top. I have listed the ones that are most commonly organized by expedition operators.

Some mountains can be accessed throughout the year. I have only listed those that are most favourable to climb.

If you have any information on a specific mountain that is popular in your area but is not listed here, please do get in touch with me.

Some of the grades are based on assessments from reading various sources. They may not be accurate. Please help to correct where possible.

Grading system used is from Jagged Globe for reference.