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. Machu Picchu Weather and When to Go. There are two main seasons in Peru: the rainy season and the the dry season. The rainy season runs between October and April, with the dry season usually running between May and September. Temperatures during the dry season run from around 12 C (50 F) at night to the mid 30s C (upper 80s F) during the day.