Peru FactsThe Coast is predominantly arid and mild, the Andean region is temperate to cold and the eastern Rainforest lowlands are tropically warm and humid. On the desert Coast, summer (Dec – Apr) is hot and dry, with temperatures reaching 77°-95°F (25° – 35°C) or more along the north coast. In winter (May – Oct), temperatures are much milder, though with high humidity.
In the Andes highlands from May to October, rain is scarce. Daytime temperatures reach a warm 68° -77°F (20° – 25°C), and nights are often quite cold (near freezing), especially in June and July. Rainfall is very abundant from December to March, when temperatures are slightly milder: 64° – 68°F (18° – 20°C) dropping only to 59°F (15°C) at night.
Though the Amazon jungle is consistently humid and tropical, with significant rainfall year-round, it experiences two clearly different seasons as well. During the dry season (May – Oct), temperatures reach 86° – 100°F (30° – 35°C) during the day.