March · Brazil
Best time to visit Alter do Chão in March Weather, crowds & prices
Weather in Alter do Chão in March
Average temperature 27°C, 280 mm of rain, about 19 days with 6+ hours of sunshine and 86% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
March score
6.3/10
Ranked #10 of 12 months
- Avg temp
- 27°C
- Rainfall
- 280 mm
- Humidity
- 86%
- Days with 6h+ sun
- 19
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
March in Alter do Chão scores 6.3/10 for beach and coastal travel - ranked #10 of 12. Expect around 27°C, 280 mm of rain, and roughly 19 days with 6+ hours of sunshine this month.
The 'Caribbean of the Amazon'—white-sand river islands and clear Tapajós water—peaks in the low-water months from August through December.
March in Alter do Chão: mixed conditions, plan around the weather
March averages 27°C (80°F) and humidity near 86%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
280 mm of rain puts this in monsoon territory — about 19 days with 6+ hours of sunshine across the whole month, and multi-day washouts are normal.
It scores 6.3/10 here, 10th of 12 months, against 9.9/10 in the destination's best month.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Plan for low-season pricing, with crowds are light for this destination.
Flexible dates? September scores 3.6 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Alter do Chão in March?
- In March, Alter do Chão averages 27°C, 280 mm of rain, and about 19 days with 6+ hours of sunshine. Its climate-comfort score is 6.3/10.
- Is March a good time to visit Alter do Chão?
- March earns a 6.3/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Alter do Chão in March?
- Expect about 280 mm of rain in March. Average humidity is 86% and there are about 19 days with 6+ hours of sunshine.
Curated in Alter do Chão
Tickets & experiences
Things to do in Alter do Chão
Alter do Chão, Brazil. Live activities and tours from GetYourGuide, matched to this destination.