The best time to dive in Socorro is from November to May. Within these months, several important events occur. From late January to early April, humpback whales migrate through the area. From November to early January and then again during April and May, manta rays and sharks are prevalent. This is due largely to water temperatures. The late winter and spring months have the coldest average temperatures of 70 to 73°F (21 to 23°C). At other times, the water is approximately 73 to 79°F (23 to 26°C). Because of the remote nature of the Socorro Islands, visibility is on average quite good at about 100 feet (30m). However, during November and December, rain, tide, currents and wind can cause a drop in visibility to approximately 60 feet (18m) at a few dive sites. Finally, surface conditions around the Socorro Islands, which lie in the open ocean, are highly variable. Dive site moorings are often protected, but the journey to the islands or between dive sites may (at times) negatively affect divers prone to seasickness.