Climate guide for Alter do Chão, Brazil

Best Time to Visit
Alter do Chão

How to read the score (0–10)
05810
UnfavorableGoodOptimal

About Alter do Chão

Alter do Chão sits where the Tapajós runs turquoise through rainforest—Ilha do Amor and freshwater beaches emerge when the river drops. August to December offers the lowest water and the best swimming and boat days; January to July raises the river and can submerge sandbars. The village is small and laid-back; combine with Santarém flights from major hubs and optional trips into Floresta Nacional do Tapajós. Expect heat year-round and plan siesta hours accordingly.

Things to do in Alter do Chão

Alter do Chão, Brazil. Live activities and tours from GetYourGuide, matched to this destination.

Frequently asked

When is the best time to visit Alter do Chão, Brazil?
The best months to visit Alter do Chão are February, March, January. February is the single peak month with a climate score of 8.5/10 based on temperature, rainfall, humidity, daylight and historical sunny days.
What is the weather like in Alter do Chão year-round?
Alter do Chão has a beach and coastal climate profile. Average monthly temperatures range from 27°C in January to 30°C in April, with climate scores between 5.8 and 8.5 out of 10.
Which months should I avoid in Alter do Chão?
The lowest-scoring months in Alter do Chão are July (5.8/10), September (5.8/10), June (6.0/10). These months typically combine less comfortable temperatures, higher rainfall or fewer sunny days.
When is the rainy season in Alter do Chão?
July is the wettest month in Alter do Chão, averaging about 250 mm of rainfall. February is the driest, at roughly 70 mm.
Which is the sunniest month in Alter do Chão?
February sees the most sun in Alter do Chão, with about 19 sunny days on average - ideal for outdoor plans.
Is Alter do Chão good for beach and coastal travel?
Alter do Chão is profiled as a beach and coastal destination in South America, Brazil. Its highest-scoring window (February, March, January) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Alter do Chão calculated?
Each month is rated 0-10 using ERA5 climate normals for Alter do Chão: temperature comfort, precipitation, humidity, daylight hours, and historical sunny days - weighted for a beach and coastal trip.

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