December is an ideal time to visit Mendoza in any year: The grapevines are alive, and the backdrop of the majestic Andes after the winter snows makes for dramatic scenery. Wine season is in full swing, and there’s a beer festival in Godoy Cruz during the first week in December—a four-day street party with live music and heavy partying. (Christmas and New Year’s, though, are high season for hotels, and the wineries close on December 24, 25, 31, and January 1.)
If I were you I’d fly into Bali and spend a couple days in the Kuta area to get your bearings and then head to Ubud, which is in the foothills and easily reached by shuttle bus. It’s also fairly crowded, but it’s still quite nice and there are scores of little spas and yoga places and that sort of thing. Then after a few days there, head up to the northern coastal town of Lovina, which is sort of like how Kuta was 25 years ago. It’s still only partly developed and there are still many open spaces, which is no longer true in the Kuta area. It’s cheaper than Kuta, and somewhat like Boracay in how mellow it is. You could also take a ferry from Bali to the island of Lombok, which is the next large one over. Things there are also more like Boracay and less chaotic than the Kuta area. Again, I really love Bali and still recommend it, but unless you are an Australian surfer, it’s best to stay somewhere other than the general Kuta area.
Thank you, and I’ll be happy to try to help. But first I have to mention that ALL of Europe is quite cold in December and there are no beaches that are anywhere near warm enough to even spend time on, much less go swimming. The only place that could possibly fit the bill is the Canary Islands, which is off the northern coast of Africa although technically part of Spain. It’s reasonably warm there during December, and there is quite a bit to do.
Anyone in the western half of the US or Canada will probably get a shorter and cheaper flight to Puerto Vallarta than to any of the Caribbean destinations above. The November weather in Puerto Vallarta is pretty much perfect and usually dry, and yet crowds are smaller and hotel prices are lower until Christmas itself. Mexico is, of course, one of the hot countries in November, in more ways than one.
Located off the coast of East Africa, the Seychelles—an archipelago consisting of 115 islands—is about as close to paradise as you can get. Crystal clear water, lush jungles, and powder-fine sand make it the ultimate early winter escape, particularly for romantic getaways. Book one of the 30 breathtaking pool villas at Six Senses Zil Pasyon, which is among the region's top luxury resorts. The hotel is situated on a private island that offers prime territory for snorkeling, sailing, kayaking, and hiking—plus, the spa has scenic pavilion-style treatment rooms that are worth the trip alone. Health conscious guests will be particularly impressed by the property's new "Eat with Six Senses" program, which is intended to make travelers leave vacation without the guilt that comes with overindulging. There are four tailor-made treatment plans that focus on sleep, detoxing, fitness, and more, depending on the issues you prefer to address.