Alter do Chão

What is the climate like in Alter do Chão?

The best time to visit Alter do Chão is typically August – September, with trip comfort peaking in September (6.9/10). Alter do Chão is warmest in October, when daily highs average 89°F (32°C), and coolest in February, when lows fall to about 78°F (26°C). The wettest month is typically March and the driest is September; the year sees roughly 128 in (3257 mm) of precipitation.

• Best time to visitAugust – September — comfort peaks in September (6.9/10)
• Warmest monthOctober — average high 89°F (32°C)
• Coolest monthFebruary — average low 78°F (26°C)
• Wettest monthMarch (20 in (502 mm))
• Driest monthSeptember (2.3 in (57 mm))
• Annual precipitation128 in (3257 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromSantarem-aeroporto, 27 km away (1973-2024)