Koodankulam, India offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Koodankulam is known for the Koodankulam Nuclear Power Plant. The best time to travel to Koodankulam, India, is from November to February, when the average air temperature is around 25°C (77°F) and the water temperature is 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!