There's no jetlag when you're travelling within the same timezone (or +/- 1 hour) in a north-south axis.
For other effects it depends a lot on your constitution and physical fitness, for some even a minor change in climate is felt very strongly for others not at all.
I travelled to Argentina from a North American winter, from -20 to +35 and I didn't get sick, my girlfriend on the other hand recently got home sick after a trip to Peru. So it depends
Change of temperature alone probably won't affect your internal clock, you have to look at altitude, humidity, time difference and exposure to daylight among other factors to get a better idea of how a trip might affect you.