Here’s a proper guide to (also spelled Agni Nakshathiram ) in the Tamil context. What is Agni Nakshatram? Agni Nakshatram (அக்கினி நக்ஷத்திரம்) – literally "Fire Star" – refers to a pre-monsoon period of intense heat in Tamil Nadu and parts of South India. It typically falls during the Tamil month of Vaikasi (mid-May to mid-June), just before the arrival of the southwest monsoon.