The best time to go to Diego Garcia is generally between April and November, which is the dry season.
During these months, you'll experience more consistent sunshine and lower humidity, making outdoor activities and enjoying the island's natural beauty more comfortable. The seas are typically calmer, which is ideal for water sports like snorkeling, diving, and sailing. This period is particularly good for those looking to maximize their time exploring the coral reefs and beaches.
While December to March is the wet season, characterized by higher humidity and more frequent rainfall, it still offers plenty of sunny periods. Travelers during this time might find fewer visitors and lush, green landscapes.