I'll try to answer in a non-sarcastic, non-Trumpian () way: My point was exactly what you write! Asking a question on Peru weather in a site like FT is not going to give you the answer you actually need. For example, when I first visited Peru during the rainy season (yes, I know Peru quite well), I did not see a single drop of rain. Was it because I visited mostly places with an average low rainfall? Was is just because it just happened that there was less rain at the particular places I visited on these particular days? How could I know, and how would this be helpful to you or anybody else planning a trip? Perhaps somebody who visited the exactly same places starting his trip, say, a week later or earlier than me would get soaked each single day. So?

What I suggested was to look at tens of sites that provide you with "statements" based on stats for something like weather. There are a few of those that do provide you with serious info. joseeantonior's absolutely correct answer regarding "microclimate" is to the point but, on a practical basis, how does one know whether it will affect your own personal experience?

Well, visit Peru and enjoy it (I'm certain you will). As for seing Trumps (plural of Trump) everywhere, just relax. I know it's a scary thought, but try to follow Monty Python's advice: :