Polaroid style images of the climate from around the islands
Backgroung image of a stingray swimming Backround image of second stingray swimming Background image of a third stringray swimming Backround image of second stingray swimming

Three major oceanic currents

Although located on the Equator, the Humboldt Current brings cold water to the islands, causing frequent drizzles during most of the year. The weather is periodically influenced by the El Niño phenomenon which brings warmer temperatures and heavy rains.

During the season known as the "Garua" (June to November) the temperature by the sea is 22°C, a steady and cold wind blows from South and Southeast, and frequent drizzles (Garuas) last most of the day, along with dense fog which conceals the islands. During the warm season (December to May) the average sea and air temperature rises to 25°C, there is no wind at all, there are sporadic though strong rains and the sun shines.

Weather changes as altitude increases in the large islands. Temperature decreases gradually with altitude, while precipitation increases due to the condensation of moisture in clouds on the slopes. There is a large variation in precipitation from one place to another, not only with altitude but also depending on the location of the islands, and also with the seasons.

The following table corresponding to the wet 1969 shows the variation of precipitation in different places of Santa Cruz Island:

Location Charles Darwin Station Devine Farms Media Luna
Altitude 6m 320 620
January 23.0mm 78.0mm 172.6mm
February 168.8mm 152.2mm 117.6mm
March 249.0mm 920.8mm 666.7mm
April 68.5mm 79.5mm 166.4mm
May 31.4mm 214.6mm 309.8mm
June 16.8mm 147.3mm 271.8mm
July 12.0mm 42.2mm 135.6mm
August 3.8mm 13.7mm 89.5mm
September 18.5mm 90.9mm 282.6mm
October 3.2mm 22.6mm 96.6mm
November 11.0mm 52.8mm 172.7mm
December 15.7mm 84.1mm 175.3mm
TOTALS 469.7mm 1901.7mm 2656.4mm