1 Matter can be broken down into two categories: pure substances and mixtures. Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components.  A chemical substance is composed of one type of atom or molecule.
February (Inca Trail Closed) 1  Overview: Another wet month, and not the best time to visit to Machu Picchu. 2  Temperature: Daytime average highs are around 20 degree C (68F) and night time average lows around 8C (46F) 3  Humidity: Average daily relative humidity is around 66 %.
Quick Summary in 3 Sentences. It is best to avoid the wet season from December through until the end of March. Low lying clouds and rain during the wet season can affect visibility at Machu Picchu. May â September & December is considered to be peak season at Machu Picchu, often reaching maximum capacity for entrance tickets.