迅速な答え
The safest season for the Saipal Base Camp Trek is October 10 to November 20 with 80 to 85 percent clear mornings at 4,600 m, daytime temperatures of 4 to 9 C, and stable snow conditions on the 3 high passes above 4,000 m. The 14 to 18 day trek in far western Nepal crosses the 4,150 m Khola La, 4,300 m Seti La, and 4,400 m Simba La passes. Avoid June to September for monsoon with 1,800 to 2,500 mm of rain, December to February for deep snow closures, and March to May for afternoon cloud cover. Plan 3 buffer days for Api Nampa Conservation Area jeep access from Darchula.
詳細な内訳
Saipal at 7,031 m is the second highest peak in far western Nepal. The Base Camp Trek starts at Chainpur or Kanda at 1,800 m and climbs over 14 to 18 days to Saipal Base Camp at 4,600 m. The route crosses 3 high passes: the 4,150 m Khola La, the 4,300 m Seti La, and the 4,400 m Simba La. The Api Nampa Conservation Area covers 1,903 sq km.
The autumn season from October 10 to November 20 offers 80 to 85 percent clear mornings at 4,600 m with daytime temperatures of 4 to 9 C and nighttime temperatures of minus 8 to minus 2 C. The spring season from March 15 to May 15 offers 65 to 70 percent clear mornings but 30 to 45 percent of afternoons see thunderstorms at 4,000 m. The monsoon from June to September brings 1,800 to 2,500 mm of rain with 70 to 85 percent morning cloud cover at 4,600 m. Winter from December to February brings 100 to 200 cm of snow above 4,000 m with 70 to 90 percent pass closure rates.
コスト/コンポーネントの内訳
| 季節 | Visibility at 4,600 m | Day temp | Risk level |
|---|---|---|---|
| October 10 to November 20 | 80 to 85 percent | 4 to 9 C | Safest |
| March 15 to May 15 | 65 to 70 percent | 8～14℃ | Acceptable |
| 11月下旬から12月 | 70～80% | minus 2 to 4 C | Cold but passable |
| January to February | 50 to 60 percent | minus 10 to minus 2 C | Passes closed |
| March 1 to 14 | 55 to 65 percent | 0 to 6 C | Snow unstable |
| 6月から9月 | 20～30% | 12～18C | モンスーン、避けてください |
答えに影響するもの
Monsoon timing is the biggest factor. The Api Nampa region receives 1,800 to 2,500 mm of annual rainfall. Snow line is the second factor. From December 1 to March 15 the snow line sits at 3,800 m and 100 to 200 cm of snow accumulates above 4,000 m. The 3 passes close 70 to 90 percent of days.
Spring cloud is the third factor. Thunderstorms at 4,000 m occur on 30 to 45 percent of afternoons in April and May. Road access is the fourth factor. The Chainpur to Kanda road closes 7 to 14 days each monsoon. Cold temperatures are the fifth factor. Night temperatures at 4,600 m drop to minus 8 to minus 2 C in October and November.
予約のヒント
Book October 10 to November 20 for the safest weather window with 80 to 85 percent clear mornings. Reserve the 4 Base Camp lodges 8 weeks ahead because they fill by mid September. Carry a minus 15 C sleeping bag for October nights at 4,600 m. Hire a local Api Nampa guide for USD 30 to USD 40 per day because the trail above Kanda is unmarked. Carry a satellite phone because mobile network stops at Chainpur.
代替案との比較
The Api Base Camp Trek at 4,800 m shares the same season pattern but sees slightly clearer weather because it sits in a rain shadow. The Rara Lake Trek at 2,990 m runs 7 to 10 days and is safer in spring. The Khaptad Trek at 3,100 m runs 6 to 9 days and is best from October to March.
避けるべきよくある間違い
Trekkers often book Saipal Base Camp for late September to avoid October crowds. Late September sees 50 to 65 percent clear mornings at 4,600 m and unstable snow bridges from the September monsoon thaw.
A second mistake is booking spring departures without afternoon weather awareness. April and May see 30 to 45 percent afternoon thunderstorm rates at 4,000 m.
フェイク
What is the safest season for the Saipal Base Camp Trek? October 10 to November 20 with 80 to 85 percent clear mornings at 4,600 m, daytime temperatures of 4 to 9 C, and stable snow conditions.
Can I trek Saipal Base Camp in spring? Yes, from March 15 to May 15 with 65 to 70 percent clear mornings. But 30 to 45 percent of afternoons see thunderstorms at 4,000 m.
Why is June to September risky? Monsoon brings 1,800 to 2,500 mm of rain and 70 to 85 percent morning cloud cover at 4,600 m.
Are the 3 passes open year round? No. The 4,150 m Khola La, 4,300 m Seti La, and 4,400 m Simba La close 70 to 90 percent of days from December to February.
まとめ
The safest season for Saipal Base Camp is October 10 to November 20 with 80 to 85 percent clear mornings, 4 to 9 C days, and stable snow on the 3 passes. Spring from March 15 to May 15 is acceptable with 65 to 70 percent clear mornings but afternoon thunderstorms. Avoid June to September monsoon and December to February snow closures.
結論
Book the Saipal Base Camp Trek for October 10 to November 20 for the safest weather window. Carry a minus 15 C sleeping bag and a satellite phone. Hire a local Api Nampa guide. Avoid monsoon and winter for safety.
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