In 2026, Jain Chaturmaas (Chomāsa) begins on Tuesday, 28 July 2026, on Āshādh Sud (Shukla) Chaudash – Chaumāsī Chaudas according to standard Jain panchāng.

Exact start can vary slightly by country/city because it follows the lunar tithi, so for practical purposes you should still confirm once with your local Jain sangh or panchāng.

If you want to read a simple Jain-focused explanation of Chaturmaas itself, you can see this article: