Answer

In 2026, Jain Chaturmasya begins on:

• 20 July 2026 for Śvetāmbara / Sthanakwasi tradition. ( jainkart.in)
• 21 July 2026 for Digambara tradition. ( jainkart.in)

Explanation

Jain traditions follow slightly different lunar dates for Chaturmasya. A Jain calendar for 2026 lists Śvetāmbara Chaturmas as starting on 20 July 2026 (Ashadh Shukla Chaturdashi) and Digambara Chaturmas as starting on 21 July 2026 (Ashadh Shukla Purnima). ( jainkart.in)

Spiritual Understanding

Chaturmasya is a sacred period of self-restraint, tapas, swadhyaya, and spiritual discipline. In Jain Dharma, it is especially important because monks and nuns remain स्थिर in one place, and householders also increase their devotional practice. ( jainkart.in)

Takeaway

So, the short answer is: Jain Chaturmasya 2026 starts on 20 July 2026 or 21 July 2026, depending on the Jain tradition you follow. ( jainkart.in)