best time to visit Andaman - Andaman being an island enjoys a tropical climate. Best thing about Andaman is that it is a year-round destination, where fluctuations in temperatures are minimal and stay pleasant throughout. The best time to visit Andaman & Nicobar Islands is considered between October and May as the weather is pleasant, just perfect for sightseeing, water sports, and beach excursion. Monsoons (July to September) are not always recommended because of the high tidal waves, incessant rains and strong winds. During July to September, that there are high tidal waves.