Why does my thyme rot in the rainy season and how do I keep it alive?

Thyme struggles most in the Indian monsoon because constant wet and high humidity cause root rot and fungal dieback. It is a dry climate herb and cannot sit in saturated soil. To carry it through the rains: plant in raised beds or large pots with a fast draining, sandy or gritty mix so water never pools at the roots; give it the sunniest, most airy spot you have; avoid overhead watering; and during heavy rain spells protect potted plants under cover. Wide spacing and good airflow reduce the fungal problem. Trim back any soft leggy growth so the plant stays compact and dries quickly after rain. If a section starts blackening, cut it out immediately so it does not spread. In high rainfall zones, growing thyme in containers you can move under shelter is far more reliable than open ground. After the monsoon it usually recovers and pushes new growth in the cooler, drier months.