For Shikharji (Sammed Shikhar / Parasnath), the best time to visit considering both weather and yatra comfort is:

• Best months:

October to March - Pleasant to cold weather - Clear views from the peak - Walking/trekking is much easier - Many sangh-yatras and Jain festivals fall in this period, so the atmosphere is very devotional (but also more crowded).

• Avoid if possible:

- Peak summer (April–June): very hot, the long climb becomes tiring and can be risky for elders and children. - Monsoon (July–September): paths can be slippery, visibility low, and forest area becomes more difficult.

• Best time of day for yatra:

- Start early morning between 3:30–5:30 am - Cooler temperature - Quieter and more peaceful for bhavna, jaap and paath - You can return to Madhuban before afternoon heat.

Spiritually, many prefer:

• Kartik, Margshirsh, Paush, Magh (roughly Nov–Feb) for very cool, devotional atmosphere.
• Festival times (like around Diwali, Kartik Purnima, etc.) if you are fine with crowds and want to experience sangh-yatra feeling.

So, if you are planning now, choose any dates between October and March, and plan your climb before sunrise for the most comfortable and spiritually uplifting experience.