The "best" time to go to the ocean depends on whether you value swimming conditions, wildlife viewing, or solitude. For swimming and clear snorkeling in the Indian Ocean (Maldives, Mauritius, Seychelles), the sweet spot is typically December to April, when the seas are calm and the weather is dry. If you are visiting the Atlantic or Pacific coasts of the northern hemisphere, late August and September are often best, as the water has had all summer to warm up, reaching its peak temperature even as the air begins to cool. For those seeking "scenic drama" and fewer crowds, the "shoulder seasons" of May and October provide beautiful lighting for photography and cheaper rates. If your goal is wildlife, such as seeing blue whales in Sri Lanka, March is the premier month. Generally, a morning visit (around 8:00 AM to 10:00 AM) is best regardless of the season, as winds are typically lighter, the water is calmer, and the marine life is more active before the midday sun and crowds arrive.