Need advice for winter sun

I Haven't travelled for 10 years due to back problems. I want to travel from London Heathrow, looking for somewhere hot, 4 hours max on a plane because of my back problem.

I'm not sure which is cheaper, Package or DIY?

I was thinking about Egypt but i believe its cold at night so I want somewhere that is not cold at night time.

I want to be by the sea, I like hills, mountains and forest.

My budget is low cause I'm not working, I'm going 14 days from 20th Dec, any suggestions appreciate it.

Thank you.

I can't think of anywhere hot which doesn't get cold at night, all I'd say is you're better off by the sea than inland as the maritime humidity will help regulate the temperature, as opposed to a desert where it gets much colder overnight.

Canary Islands?

Most other places within 4 hrs of LHR I wouldn't call hot in Dec/Jan, or they're surrounded by desert. :-)

What about turky ?

What about turky ?