Whale Shark Season, from April to November, is when the chance to see whale sharks is almost 100%, and when the water in the central islands happens to be the coolest. The water temperatures at Wolf & Darwin, where we spend most of the time is warmer than in the rest of the archipelago (74-78°F). The divers who choose to travel during the cool season will be rewarded by the almost guaranteed presence of whale sharks at Darwin Island.

Warm season, when the temperature all over the archipelago goes from 75° (at the central Islands) up to 80° (at Wolf & Darwin) and when the chance to see whale sharks is 50-50%, and when there is more "ray" activity (Manta, mobula, spotted eagles, and golden eagle rays get together in sometimes large schools to mate). December to April is the warmer wet season with water temperatures ranging from the mid 70's F to the low 80's F. The general rule is that the warm season is not as windy as the cooler season.

There are several major currents that influence the water temperatures throughout the archipelago. It is a general rule that the northern islands (Wolf, Darwin, Marchena, Genovesa and Pinta) are the warmest. The central islands are cooler but highly variable, depending on localized upwelling (Santa Cruz, Santiago, Floreana, Espanola, Pinzon and Santa Fe). The coolest part is located on the western side (Isabela and Fernandina). Some currents run parallel to the coast and are greatly influenced by tidal change. There are also localized down currents and upwellings. Even though divers may be experienced, it is a good idea to follow the advice of the Divemaster.

Additional Information:
Galapagos National Park
Darwin Foundation