<human>: Give me the gist of the text in a nutshell

Hi /r/travel 
So I have just gotten a job starting in Jan and want to go travelling asap. I live and am from the UK but will be looking to spend xmas in Tennessee with my Mum. So I figured I have 3 to 4 weeks. I speak Portuguese and very basic Spanish. S America could also be an option.

Budget: I should have enough for the time period, around 8000 USD in savings

Looking for: I love the beach, hiking and would love to see historical monuments

Concern: Weather. Since it is such a big place (Incl SA) I am having trouble in figuring where to go for the good weather. It is the rain that is worrying me.

If anyone has any experience or knowledge I would be very grateful to hear from you.
<bot>: Where are the good places to go visit central america or quite possible south america during November/early Dec for beach, hiking, meeting travellers?