The Galápagos Islands, located in the Pacific Ocean, about a thousand kilometers (600 miles) west of Ecuador, have a peculiar climate, tropical and semi-arid, with a hot and relatively rainy season from January to May, and a cool and dry season, but also cloudy and misty, from July to November.
The landscapes of the Galápagos are barren, except in the highlands of the larger islands, which receive more abundant rainfall. As was already noted by Charles Darwin, who as we know studied the peculiarities of the species living on the islands, their climate is cooler than one would expect from a place located near the Equator. This is due to the Humboldt Current, which reaches the area after flowing in the ocean to the west of South America. However, there are different sea currents that meet or take turns in the area; in fact, there is also a warm current coming from Central America, which runs at no great distance and is more active in the years of El Niño. Therefore, in this area the climate is variable from one year to the other and the weather is difficult to predict.


Here are the average temperatures in Puerto Baquerizo Moreno.

As mentioned, on these islands there are two seasons: a warm season from January to May, with maximum temperatures around 29/30 °C (84/86 °F), and a relatively cool season from July to November, called Garúa, with daytime temperatures around 24/25 °C (75/77 °F). In the latter, night-time temperatures remain acceptable, around 18/19 °C (64/66 °F), but there are often mists, which cause the condensation of tiny droplets (called garúa from which the season takes its name), and the sky is often covered with low clouds (because of the thermal inversion generated by the cool sea current). This period is the least rainy of the year on coasts and plains (because the Garúa does not produce significant rain accumulations), while on inland hills and mountains, there can be some real rains. The highest peak is the Volcán Wolf, 1,707 meters (5,600 feet) high, situated on Isabela Island.
The warm season, from January to May, is instead the rainiest period, but normally the rains are not abundant, and in any event they occur in the form of afternoon showers, which do not overshadow too much the sun. The rainiest month is March.
On the coasts, the rainfall amounts to less than 500 millimeters (20 inches) per year, so it's not abundant. Here is the average precipitation in Puerto Baquerizo; we can notice the fact that in the dry season, few millimeters (a few tenths of an inch) per month accumulate, due mostly to drizzle and dew formation.

However, tourists flock to the beaches during the rainy period because in addition to being the sunniest, it's the one in which the sea is the warmest.
It must be said that rainfall is irregular, and can become more abundant in the years of El Niño. During the most intense El Niño years, such as 1982-83 and 1997-98, the climate of these islands becomes fully tropical, with higher temperatures and abundant rainfall. In contrast, in the years of La Niña, the rains become scarcer, and there's a decrease in both air and sea temperature.



The sun at the Galápagos shines all in all for a good number of hours in the hot and relatively rainy period, while in the cool period, clouds and mists become more frequent.

The sea is warm enough for swimming from January to May (when it's also calmer), while it becomes a little cool from July to November, when the water temperature drops to around 21/22 °C (70/72 °F).

Best Time

---

In general, you can visit the Galápagos all year round. However, the best time to visit the islands, if you also want to swim and sunbathe, runs from February to May, since it is the warmest and sunniest, although there may be some downpours or thunderstorms in the afternoon.
The cool season, from July to November, can be recommended to explore nature, since it almost never rains in the plains and the temperature is pleasant, even though you have to take into account mists, haze and cloudy skies. From September to November the sea can be a bit rough, and this can disturb those who suffer from motion sickness, during boat trips between the islands.

What to pack

---

From December to May (warm period): bring light clothing, a light sweatshirt for the evening, a light raincoat or umbrella for rain showers; a sun hat (after all, we are at the Equator). If you want to go hiking in inland hills and the Volcán Wolf, you need a sweatshirt a bit warmer and a raincoat, and hiking shoes.
From June to November (cool period): bring light clothes, a sweatshirt or sweater and light jacket for the evening. When going hiking in inland hills and the Volcán Wolf, bring hiking boots, a sweatshirt and raincoat.

When going to the reef, you can bring snorkeling equipment, including water shoes or rubber-soled shoes.