South America in April: Weather, Crowds & What to Expect

Caribbean Coast & the Guianas (Venezuela’s northern coast, Guyana, Suriname, French Guiana)

Humidity spikes and cloudbursts are common as the seasonal rains ramp up across the region; expect sudden tropical downpours that can last an hour or more. Travel by road in rural Guyana and French Guiana becomes muddier and slower; flights remain the most reliable way to hop between capitals. For coastal Venezuelan towns like Choroní and the Margarita beaches, there are still bright, warm windows between rains, and prices are lower than in the dry season, so it’s a good time for quieter seaside stays. Always carry rapid-dry clothing.

Amazon Basin (Brazilian Amazon, eastern Peru, southern Colombia, Ecuador, Bolivia)

Torrential rains can dominate this month, swelling tributaries and flooding low trails; expect humid 28-32°C days and saturated campsites in lesser-maintained jungle lodges. Travel by canoe or larger riverboat is often the best way to reach remoter reserves, and wildlife sightings of waterbirds, capybara and caiman can spike when fish move into new channels. Bring rubber-soled shoes and a willingness to change plans if a river crossing becomes impassable.

Northeast Brazil & the Sertão (Coastal cities: Salvador, Recife, Fortaleza - interior drylands of the Sertão)

The coastal strip is typically hot and sunny with pleasant ocean breezes, pushing day temperatures into the low 30s; inland sertão communities are extremely dry and prone to drought stress. Many visitors use this time for water sports, city culture in Salvador and historical walking tours in Olinda before the heaviest rains arrive. In the backcountry, potable water is essential and rural road conditions can be rough-arrange local transport.

Southeast Brazil & Central Plateau (Rio de Janeiro, São Paulo, Minas Gerais, Brasília, Goiás)

Coastal humidity and heat escalate with temperatures often reaching the low to mid-30s in Rio; expect heavy, often sudden thunderstorms late in the day. Brasília’s dry season continues-mornings are cool for walking and the clear skies make for striking sunsets. Chapada Diamantina and other inland park areas can be very hot by afternoon; early starts for hikes are recommended and bring sun protection plus water.

Andean Highlands & Altiplano (Colombia highlands, Ecuador, Peru highlands, Bolivia’s Altiplano, northern Argentina high Andes)

Early signs of the rainy season appear in lower Andean valleys, but most high-altitude trails and major tourist routes remain relatively dry and walkable. Snow is uncommon at lower alpine passes yet higher summits may keep permanent snowpack; temperatures vary widely by elevation-mountain villages can still see frosty dawns. Trail operators begin to prepare for wetter months, so this is a last good chance for uninterrupted multi-day hikes.

Northern & Central Chile - Atacama, Coastal North and Central Chile (Arica to Santiago, including Atacama Desert and valleys)

Stable, dry weather continues in the Atacama with excellent visibility and warm sun by day; Santiago and the central valley enjoy mild, late-summer warmth while mornings are becoming cooler. This is a good moment for combined itineraries-beach days in Valparaíso-like coastal towns and afternoon winery tours in the Central Valley. For high-altitude astronomy and desert overnight stays, expect clear skies and significant nighttime chill-bring a thermal layer.

Patagonia & Tierra del Fuego (Southern Chile & Argentina: Chiloé, Puerto Montt, Torres del Paine, Ushuaia, southern Lake District)

Stability is often at its best for trekking with long sunny spells and daytime temps in the low double-digits, but windy days continue to be the norm; rain can still blow in off the Southern Ocean unexpectedly. This is prime season for full circuit hikes and ferry crossings between islands; cities like Puerto Natales bustle with logistics for hikers and Patagonian cuisine is in full service. Carry both sun and rain protection and plan buffer days for weather-related transport delays.