The best time to visit the Cayman Islands for diving is largely influenced by weather patterns and marine life activities. While you can dive year-round in the Cayman Islands, certain months offer more optimal conditions than others.
The water in the Cayman Islands remains warm throughout the year, with temperatures ranging between 26–28°C (79-82ºF). Visibility is also typically excellent, often exceeding 20 meters and can be much higher, making it ideal for diving​​.
Best Months for Diving:
January to March: These months are generally considered the peak season for diving in the Cayman Islands. The weather is cooler and drier, making it comfortable for diving and other activities.
April to August: These months are part of the rainier season but also offer the chance to encounter great hammerheads and other marine life such as Caribbean reef sharks, groupers, and spotted eagle rays​​.
September to December: The visibility and water conditions remain good for diving, though it's important to be aware of the hurricane season that runs from June to November.
During the hurricane season, spanning June to November, the weather can be more unpredictable with occasional showers, though they typically don't last long.
The warmer months like April and November can be busier, while the cooler months tend to be cheaper and less crowded