Idinthakarai, India offers 1 beach perfect for sunbathing, surfing, swimming, and more. Idinthakarai, Tamil Nadu, India, is known for its proximity to the Kudankulam Nuclear Power Plant and its scenic coastal views. The best time to travel to Idinthakarai, India, is from November to February, with average air temperatures around 25-30°C (77-86°F) and water temperatures approximately 27°C (81°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!