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 %.
Machu Picchu Weather. The climate in Machu Picchu is very consistent, with nearly constant temperatures year-round, and the year can be divided into two season-the dry season and the rainy season. May through October: The winter in the Southern Hemisphere is also the dry season, which means it's usually the best time to visit Machu Picchu.