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You can dive in Galápagos all year round, but the experience changes noticeably with the seasons. There is no single perfect month for every diver, so the best time depends on whether you care most about warmer water, calmer seas, visibility, or the chance of seeing larger marine life.
June to December is often considered the strongest season for experienced divers who are interested in big marine encounters. Cooler, nutrient-rich water can attract more large species, and this period is especially appealing for divers hoping for encounters with sharks and other pelagic life. The trade-off is that water temperatures are lower, thermoclines are more common, and the sea can be choppier, especially between September and November.
From roughly December to May, conditions are generally warmer and often calmer. This can be more comfortable for some divers, and visibility can be good, but the warmer water is usually less nutrient-rich than in the cooler season.
Whichever month you choose, Galápagos remains an advanced diving destination. We recommend reading about what diving in Galápagos is like and what diving equipment to bring before booking. If wildlife is your priority, our FAQ on animals you may see while diving in Galápagos is a useful next read. You can compare suitable itineraries on our Galápagos diving cruises page.