If you are traveling to Cusco and Machu Picchu, please take into account our recommendations:
Cusco, Temperate with temperatures that fluctuate between 14º and 16ºC with warm days and cold nights, the rainy season in Cusco begins in October and lasts until March.
Machu Picchu is a semi-tropical climate, with hot and humid days and cold nights.
The season with the highest humidity is from January to April when the roads are often closed because of landslides or floods.
We consider that the best months to visit Machu Picchu are from April to October.
Water is drinkable in almost all of Peru, but the chemicals vary by location. To avoid problems, we recommend that you always drink bottled water.
Because you will be visiting Los Andes, do not forget to take the necessary precautions to avoid altitude sickness. Be sure to have a hot tea or mate of coke as soon as it arrives; The first day, she strolls and eats light.
In Peru, the voltage is 220 Volts, 60 Hz. European and American flat plugs require adapters.
Here is an example graph of the type of plug used in Peru, Type B.