You can visit the Galapagos any time of the year as there is always something wonderful happening in the Islands, especially with wildlife’s behavior and natural events.
From mid-June to early-December you have a mixture of warm and rain (afternoon showers), and Ocean waters are warmer and calmer due to the “El Niño” current. From mid-December to early-June is the cool/dry season on land and Ocean, especially because of the passing of the “Humboldt” current through the Archipelago.
Galapagos is a top-destination for travelers, therefore cruises and tours are on very high demand year-around. It is recommended to arrange your trip at least with 6 months in advance to secure and guarantee your spots on the preferred trip.
Now, if you find the opportunity to visit the Galapagos before 6 months in advance, there is also the possibility to find cruise deals that may fill your expectations. However, if you leave your decision for the last-minute, you may not find what you were looking for a tour that will fulfill your expectations.
On a general basis, unless included on the given price for the confirmed cruise, passenger needs to bring enough cash on board to cover costs like Galapagos entrance fee ($100 p.p. in cash on arrival to Islands), mandatory Transit Control Card ($20 p.p. paid before check-in in cash), snorkeling equipment & wet suit rental (in cash on board), personal expenses, extras, soft & alcoholic drinks, tips for guide& crew and other expenses not specified in the itinerary.
Some Luxury and First accept Credit Card payments on board for on board consumption but Midrange and Economy require payments in cash only. It is imperative that you bring enough cash (U.S. Dollars) in all cases to cover your expenses while cruising the Galapagos.