The best months for diving in Seychelles are typically April/May and October/November. During these months, the water temperature is warm, visibility is excellent, and weather conditions are generally calm, making it ideal for diving.
From December to March, the seas are generally calmer and the weather is warm and sunny, but there can be occasional heavy rainfalls and strong winds, which can affect diving conditions. June to September can be a good time for diving as well, but the water temperature may be slightly cooler, and there is a higher chance of stronger winds and rougher seas.
Overall, Seychelles offers year-round diving opportunities, but the best months for diving can vary depending on personal preferences, dive sites, and weather conditions. It's always a good idea to check weather forecasts and dive conditions before planning a diving trip to Seychelles