December officially marks the start of the warm season in Galapagos as the trade winds drop and the cold water currents from the south ease. This means the air and water temperatures start to rise.
The change of the season marks the both start and the end of the mating season for much of the fauna of Galapagos. December is a month that enjoys great weather, with clear blue skies, and very little wind with some short bursts of rain, which means many of the plants start budding and in many areas Galapagos becomes green again.
Giant Tortoise eggs begin to hatch in the wild this month which lasts until April, Green Sea Turtles become more abundant and visible as their mating activity reaches a peak this month and they remain closer to their breeding beaches. This month also sees most of the Waved Albatross chicks on Espanola make their maiden flight.