Alter do Chão relocation guide
Weather and river seasons in Alter do Chão
Check rainfall, heat and river access separately. Historical Belterra averages help with the season, while the home and today's conditions need local checks.
- March normal rainfall
- 325.5 mm
- Belterra regional station, 1991 to 2020
- September normal rainfall
- 32.6 mm
- Belterra regional station, 1991 to 2020
- October normal high
- 91°F (32.9°C)
- Historical Belterra regional reference
On this page
The short answer
Weather in Alter do Chão affects the working room, the final approach home and the outings you can make. River levels also change the beach and boat routine. Use the nearby Belterra station as a regional historical reference, then check the forecast and present access before traveling. Inspect the actual home after rain and through the hours when you will work and sleep.
- Belterra is a regional station outside Alter do Chão.
- The chart uses INMET 1991 to 2020 normals.
- Historical rainfall is not a forecast or river gauge.
- Access to Serra Piroca changes with the water.
Our take
Read the regional climate reference
Tool
Alter do Chão by month
Belterra, outside Alter do Chão, 1991 to 2020 normals.
Average highs range from 86°F to 91°F. Rainfall peaks at 325.5 mm a month. INMET, 1991 to 2020 monthly rainfall normals (opens in a new tab)
The chart uses INMET's Belterra conventional station 82246, outside Alter do Chão. Its published register gives latitude -2.642222, longitude -54.943889 and elevation 164.3 meters. The 1991 to 2020 workbooks provide monthly maximum-temperature, minimum-temperature and rainfall normals. Original publisher files were checked through archived copies.1,
Belterra's normal rainfall is 325.5 millimeters in March and 32.6 millimeters in September. October's normal maximum is 32.9°C, with a 22.4°C normal minimum. These describe the historical regional station, rather than a particular village street, indoor room or future day.1,
Keep river access separate from rainfall
The municipal Serra Piroca report describes boat access to the base and a possible walking approach during low water. It also describes a steeper final part of the climb. Confirm the present approach with the guide and choose the route around the group's needs.4
Ilha do Amor, Lago Verde and the Cururu and Muretá points are different outing destinations. Ask about the current landing, water and return arrangements before choosing a trip. A dry month at Belterra does not certify boat, beach or swimming conditions at each place.4,
Test the home through the ordinary day
Inspect after rain
Walk the final road approach and check drainage and previous water entry.
Run the cooling
Use the sleeping and working rooms at the hours that matter.
Check the water system
Ask about storage, pump, treatment and supply interruptions.
Test the working day
Use the actual connection and try a backup.
Check today's conditions
Read the forecast and local access advice before a trip.
Choose a useful first stay
Use home locations, rent and utilities to make the inspection practical. Test remote work through a normal day.7,
Connect getting around with the season and leave room to change weekend outings. Keep emergency arrangements in safety.4,
Questions people ask
Are the monthly figures measured in Alter do Chão?
No. They are INMET 1991 to 2020 normals for Belterra station 82246, outside the village. The station's name and coordinates identify the regional reference.
Which months have the most and least normal rainfall?
At the regional Belterra station, March averages 325.5 millimeters and September 32.6 millimeters. These historical normals help plan a trial stay, but are not a forecast.
How should I check access to Ilha do Amor?
Ask locally about the present walking approach, boats and return. River levels need a separate check from monthly rainfall at Belterra.
What should I inspect at the home?
Cooling at working and sleeping hours, drainage and previous water entry, the final approach after rain, water storage and a usable connection backup.
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Sources and how we check them
Sources and how we check them11 sources
Every figure on this page comes from the official or primary source listed here. We checked them in . Rules and prices change, so confirm anything important with the source before you act on it.
- INMET, 1991 to 2020 monthly maximum-temperature normals (opens in a new tab)
- INMET, 1991 to 2020 monthly minimum-temperature normals (opens in a new tab)
- INMET, 1991 to 2020 monthly rainfall normals (opens in a new tab)
- Santarém tourism department, Serra Piroca guided-trail report, June 3, 2025 (opens in a new tab)
- INMET, 1991 to 2020 conventional-station register (opens in a new tab)
- Santarém tourism department, local destinations, January 8, 2026 (opens in a new tab)
- Duda Imobiliária STM, Alter Ville monthly rental advertisement (opens in a new tab)
- Agência Pará, Alter do Chão water-system preparations, March 17, 2026 (opens in a new tab)
- Amazonet, current website coverage and customer contact text (opens in a new tab)
- Santarém, regular buses and temporary Sairé transport, September 15, 2026 (opens in a new tab)
- UK FCDO, Brazil health and emergency guidance (opens in a new tab)
Tapajós river beach at Alter do Chão, photographed August 23, 2021. Place context, not current water, access or service conditions. Hero photo by JorgeFromBrazil, CC BY-SA 4.0 (opens in a new tab), from Wikimedia Commons (opens in a new tab).