When can you experience Bioluminescence in Grand Cayman?
Tour operators will usually only take guests on a bio bay tour in Cayman at certain times of the moon cycle. Usually the week before and the week after the New Moon. The reason for this is because the light from the moon washes out the glow of the plankton and operators can’t guarantee a bright and luminous experience for their guests.
If you’re visiting Cayman at the wrong time of the moon cycle, don’t get your hopes down just yet! Tour operators only stop their operations as a bright experience can’t be ‘Guaranteed’ if you don’t get in the water and snorkel. If the moon is not visible, either from a cloudy sky or being close to or below the horizon, the bio bay will still be bright. However when the moon is visible, it is still possible to experience the bioluminescence when snorkeling.
In essence, the bioluminescence is always present. There are just many different factors that effect how easily you can see it. By renting a kayak and having it available during your stay, there’s always the possibility that conditions are good enough to explore the bio bay, despite the fact that no tour companies are operating during your stay.
Check out the moonrise and moonset times for Grand Cayman Here or contact us If you want some help discovering if this adventure is an option during your visit to Cayman. To see when the bio bay is available from most tour operators, take a look at our table below.