Galapagos Islands - Cachalote Explorer (Itinerary B)

In Quito and the highlands, it should be warm by day and generally dry. Maximum daytime temperatures are almost constant throughout the year at 20ºC, nights 8ºC. Some rain can be expected in February to May and October to November but storms, though heavy, are generally short, and Quito is considered to have quite a pleasant climate.

It is possible to visit the Galapagos at any time of year, but seasonal variations do affect what you see and there are climatic changes to be aware of. The weather is controlled by the two main ocean currents of the region, the Humboldt, bringing cold water from the Antarctic, and El Nino, which brings tropical water from the Gulf of Panama. How close to Galapagos they converge (which varies from year to year) is the key to the weather.

'Dry season'

Generally speaking, late May to early December is the cooler 'dry' season. In this period it is not necessarily dry, as there is a persistent light mist (garua) and often light drizzle, and the higher mountain slopes are covered in cloud and fog or rain. At this time the winds are in the southeast and are higher than at other times, so seas can sometimes be choppy and anyone worried about seasickness might be better advised to avoid it. Daytime maximum temperatures lie between 27ºC and 31ºC, the cooler months being July to November. In July and August. the fairly strong winds introduce a chill factor, and it can feel quite cold at nights, though throughout the year the official night temperatures vary between 19ºC and 24ºC.

'Wet season'

Depending on how close the convergence of the two currents comes to Galapagos, there may or may not be a wet season from January to April or May. Approximately every seven years the El Nino current actually hits the islands and there will be heavy rains in these months. In other years rain usually falls sporadically from otherwise clear skies. The ocean temperatures are higher, with generally calm seas and strong sunshine: pleasant, but potentially very hot. Apart from an El Nino year, the weather is usually better from December/January to April/May than at other times even if there is some rain, and most people would regard these months as the best time to go.

There are plenty of wildlife highlights throughout the year:

January: Nesting land birds; Green sea turtles arrive to lay eggs on the islands beaches; land iguana’s start breeding on Isabela.
February: Nesting Marine iguanas on Santa Cruz; Greater flamingos start nesting on Floreana. 
March: The bright red throat pouches of frigatebirds are inflated during mating season on Genovesa and San Cristobal. 
April: Huge numbers of Waved albatross on Española displaying courtship rituals; eggs of Green sea turtles begin to hatch; land iguana eggs hatch on Isabela. 
May: Courtship of Blue-footed boobies begins on North Seymour; Waved albatross on Española start laying eggs. 
June: Giant tortoises migrate to the lowlands and start nesting; migrating birds stop in the Galapagos to rest; migrating Humpback whales can often be seen around the western islands. 
July: Dolphins and whales are more likely to be seen around the western islands; Blue-footed boobies on Española start breeding. 
August: Nazca boobies nest on Genovesa Island; Sea lions start giving birth to pups. 
September: Penguins seen in the water when snorkelling around Bartolome. 
October: Galapagos Fur seals start mating; Blue-footed boobies start raising chicks. 
November: Curious Sea lion pups found in the water amongst snorkelers. 
December: Mating Green sea turtles; Waved albatross chicks fledge.