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Alter do Chão
Alter do Chão · Pará Less favorable time to visit Fall Shoulder season

Alter do Chão in May

Short answer

In May, Alter do Chão averages highs of 30 °C (86 °F) and lows of 22 °C (72 °F), with about 274 mm of rain spread over roughly 22 days. May is one of the rainiest months of the year, so bring a rain jacket and keep some indoor activities in mind. Crowds tend to be moderate this month.

Climate · INMET (updated 2026)
Most reviewed activity in Alter do ChãoTapajós National Forest Tour★ 8.7 · 3 reviews · from US$ 77 · via CivitatisSee dates and price →
Temperature
30 / 22 °C
high / low
Rain
274 mm
22 days
Daylight
12h00
sunset at 18:35
Crowds
Moderate
1 public holiday

What to expect in Alter do Chão in May

Myllena Vieira, editor at Visite
Editor's tip

May brings fall to Alter do Chão. In Brazil the seasons are the reverse of those in the Northern Hemisphere. Highs reach 30 °C (86 °F): the heat calls for early starts, sunscreen, and spending the middle of the day in the shade or in the water. Crowds sit somewhere in the middle, with peaks on public holidays. Outside those dates, you can enjoy the place at an easy pace and spend less. It rains fairly often, so keep an indoor plan handy for gray days.

Myllena Vieira · Editor at Visite
Crowds
Crowd level: moderate

Moderate crowds, with peaks on public holidays. Outside those dates, you can enjoy the place at a calmer pace.

Prices
Rates: moderate · ~R$ 544

Moderate prices outside public holidays, which push rates and crowds up. The average nightly rate for lodging in Alter do Chão is around R$ 544 (Brazilian reais), depending on the date.

Tours and tickets

Things to do in Alter do Chão in May

booking on Civitatis
Tapajós National Forest Tour
8.7· 3 reviews

Tapajós National Forest Tour

Venture into the Brazilian rainforest and discover the animals that live there on our 1 or 2-day Tapajós National Forest Tour.

2 days
from US$ 77
Book →
Alter do Chão Full Tour
6· 4 reviews

Alter do Chão Full Tour

Explore the dreamlike beaches & lakes of the Amazon on our Alter do Chão Full Tour. You'll see some of Brazil's most incredible sights!

12 h
from US$ 64
Book →
Jari Canal Tour
6· 2 reviews

Jari Canal Tour

Explore a unique environment full of extraordinary animals & plants on our Jari Canal Tour. We'll venture into a nature reserve in the Amazon Rainforest.

10 h
from US$ 77
Book →
Arapiuns River Communities Tour
2· 1 review

Arapiuns River Communities Tour

Discover the traditions and way of life of the people who live in the Amazon on our Arapiuns River Communities Tour. Discover the daily lives of these people.

2 days
from US$ 90
Book →
Santarém Rivers Tour
2· 1 review

Santarém Rivers Tour

Get a close-up look at the spectacular spot where the Amazon and Tapajós Rivers meet on our Santarém Rivers Tour. You'll love it!

10 h
from US$ 90
Book →
Tapajós River Communities Tour

Tapajós River Communities Tour

Discover the traditions of the Tapajós River communities on our 1 or 2-day tour. We'll explore this beautiful part of the Amazon and meet the locals!

2 days
from US$ 64
Book →
See all activities in Alter do Chão
Where to stay

Hotels in Alter do Chão

In May, demand in Alter do Chão is moderate: most hotels have room, but public holidays fill them up. Compare rates and book a few weeks ahead.

See all hotels in Alter do Chão

Rates change with the dates: confirm the price on Booking.com.

What happens in May

No major fixed festivals in May, but public holidays (Labor Day) bring more people to the destination.

Public holidays in May: Labor Day (01/05). Expect more people and higher prices around these dates.

What to pack in May

Light clothing and a cap · highs of 30 °C (86 °F) Rain jacket or umbrella · 22 days of rain in the month Sunscreen and sunglasses · strong sun on the tours Quick-dry clothing · humidity of 90% Comfortable walking shoes · you will be on foot much of the day
Looking for better weather?

Where the weather is good in May

These destinations have the best weather comfort for May, scored with the same calculation of rain, heat and humidity. Tap to see what the month is like in each one.

Belo Horizonte 88
Belo Horizonte
Minas Gerais · see May →
 Brasília 88
Brasília
Distrito Federal · see May →
 Brumadinho 88
Brumadinho
Minas Gerais · see May →
 Mariana 88
Mariana
Minas Gerais · see May →
See all destinations by month

Torn between Alter do Chão and another destination?

See Alter do Chão next to the destinations that usually compete for the same trip: month-by-month weather, driving cost, ideal length of stay and travel style, side by side.

Alter do Chão or Manaus? Alter do Chão or Bonito? Alter do Chão or Fernando de Noronha?
see all comparisons →

Questions about Alter do Chão in May

What is the weather like in Alter do Chão in May?
In May, Alter do Chão averages highs of 30 °C (86 °F) and lows of 22 °C (72 °F), with about 274 mm of rain spread over roughly 22 days. May is one of the rainiest months of the year, so bring a rain jacket and keep some indoor activities in mind. Crowds tend to be moderate this month.
Does it rain a lot in Alter do Chão in May?
In May, Alter do Chão gets about 274 mm of rain spread over around 22 rainy days, wetter than the average for the year. Bring a rain jacket and have an indoor backup plan.
Is May high season in Alter do Chão?
Crowds in May tend to be moderate. Moderate prices outside public holidays, which push rates and crowds up.
What is happening in Alter do Chão in May?
No major fixed festivals in May, but public holidays (Labor Day) bring more people to the destination.
Does it usually rain all day in Alter do Chão in May?
INMET's climate normals record the number of rainy days and the total millimeters, not the hours of each day, so they do not say how long the rain lasts. What they show for Alter do Chão in May: 22 rainy days in a month of 31 days (about 71% of the days) and 274 mm over the month, which works out to an average of about 12 mm per rainy day. Compared with the rest of the year, May is wetter than the destination's average. Bring a rain jacket and have an indoor backup plan for the rainy days.
What is the temperature in Alter do Chão in May, and what should you pack?
According to INMET's climate normals, the average high in Alter do Chão in May is 30 °C and the average low is 22 °C, with air humidity of around 90%. Compared with the rest of the year, the temperature in May is typical for the destination. For your suitcase, here is what those numbers call for: light clothing and a cap; rain jacket or umbrella; sunscreen and sunglasses.
Is Alter do Chão worth visiting in May?
Less favorable time to visit. On our weather comfort index, which weighs rain, heat and humidity from INMET's climate normals, May scores 31 out of 100 and ranks No. 10 among the 12 months. The most comfortable month is October (60) and the least comfortable is June (30). As for crowds, in May they tend to be moderate.
April see the full year June