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The Amazon


The Amazon has two seasons, rainy and dry. The rainy season runs from December to June, with temperatures ranging from 23°C (73°F) to 30°C (86°F) and frequent, even daily, rains in April and May. The dry season lasts from July to November, with temperatures from 26°C (78°F) to 40°C (104°F), with less rain, though showers are still possible. As with any area as large as the Amazon, regional differences can be stark. Belém is one of the rainiest cities in the world, with no true dry season. Downpours can be expected almost daily from December to June, tapering off somewhat in October, the driest month. By contrast, Palmas, the capital of Tocantins, lies in a low river valley where the sun can be intense and uninterrupted for weeks on end, even while nearby hills are cool, even chilly. Rain forest areas manage to pack in both extremes: heavy rains and high humidity, but surprisingly cool temperatures, especially at night or when there’s rain, thanks to relatively little sunlight penetrating the canopy.