This Manaslu trek is best done in pre-monsoon season i.e. from March to May and post-monsoon season i.e. from late September to December. In general, any time during October, November, April and May are considered the best months. Other recommended months for this trek are September, December and March. We do not recommend doing this trek during the rest of the months. Due to heavy snowfall in January and February it becomes very risky to cross the Larkya La Pass. Likewise, heavy rainfall causing flood and landslide can be experienced during June, July and August, so it is better to avoid these months.