I'm going to peru from may 25-june9th (two weeks) bringing a 40L backpack on the airplane ( no checked baggage) . We will be sleeping on the ground 3 nights and I need to know
how to pack light
and what to bring
and what to expect climate-wise (temperature) and how to pack for the weather

Peru is a big place. Where are you going, Amazon, Andes? The weather will vary tremendously depending on where you are.

Provide more information and you will get much better responses.

Hi Geena,

Well, you need to know that Peru has different regions and each one has different weather. If you come to Lima,in June is cold, but if you go to Cusco is hot, the same in the jungle. I think you must pack light, bring some shorts, a pair of pants and one jacket. If you tell me the places you are going to visit I can help you more.

Bye.

Hi Geena,

Here I found a guide for traveling to Peru, I am sure it will help you: http://www.markawasi.com/tips.html

Peru is a really big place you need to do some research....I used http://theonlyperuguide.com/ to help with planning. I think June is the dry season and you can expect good weather in most parts of Peru at this time.