While December is quite busy in Lima, as a very popular summer beach destination for South Americans, it's also still very reasonably priced so it's worth considering if you are exploring the continent. The beaches aren't spectacular as they are in Brazil and elsewhere, but Lima is still a great summer city with great outdoor life this time of year.
With a vibrant downtown, great restaurants, culture, and a recent multi-million renovation to the Ritz Carlton, Naples, one of the areas most luxurious hotels, December is when the town really starts to get into gear. You can spend your time on the miles of gorgeous Gulf Coast white sand beaches, take an Everglades Safari, or head to the Artis-Naples which hosts world class dance, theatre, music, and comedy. And that is to say nothing of the five-star shopping.
Oh, did you want a sunny tropical vacation that doesn’t require a passport? Done. Hurricane season is over, flights are cheap, and the water is still warm enough for swimming (and scuba diving). Almost all the tourists come here via cruise ship, which means you’re mostly not competing with them for hotel rooms -- Windward Passage, Emerald Beach, and the Bolongo are all open for business after Hurricanes Irma and Maria last year. On December 16 you can catch Jazz By The Sea down at Coral World Ocean Park, and on December 21 watch the St. Thomas Lighted Boat Parade, where contestants (boats) are judged on lights, originality, and holiday cheer.
If that doesn’t interest you I would point you towards the Playa del Carmen area, which is just south of Cancun and just across the strait from Cozumel. November is technically the last month of hurricane season and early in the month you’ll probably get at least a few quick rain storms, but actual hurricane in November are very rare. And at least Playa del Carmen is on the mainland and near a huge airport, so tourists would never be trapped there as they might on some small islands. Playa del Carmen is a fairly large touristy town with hundreds of little hotels, restaurants, bars, and things to do, so it’s good for a solo visit or with another person. Cancun proper, on the other hand, is mainly a long strip of beach hotels and time-share residences that are spread out and not well suited to solo visitors or small groups.
In SE Asia you have many choices, but probably the best choice for a family would be Phuket, Thailand. It’s more expensive than Goa, but the infrastructure there is much better. Patong Beach is the biggest town on the island and the main tourist hub, but for a family I’d recommend Karon Beach or Kata Beach, both of which are just a bit south of Patong, and both lovely.
Let’s just say that November in Colorado is a truly exciting time of year. The city of Denver hosts several hot annual events, including Mile High Holidays, The Starz Film Festival, and the International Wine Festival. There’s also Denver Arts Week, which is a week-long celebration of the visual and performing arts held during the same month. What’s more is that snow aficionados looking to get an early start on winter sport fun should make resort reservations come November. The earlier you claim those spots, the cheaper the prices tend to be.
I have been reading the thread with great interest. I took my 2 daughters aged 11 and 18 to SE Asia in December and they loved it. Siem Reap – lovely vibe over new year and not too busy. Would stay longer than 3 days because the heat and humidity slows you down and you would rather want to cool down in the hotel pool in afternoons and try and squeeze in more than 1 wat in a day. Easy to get around and good food and vibe in Pub Street.
If you are looking for first-rate destinations that are among the cheaper European cities, I’ll suggest Prague, Budapest, Krakow, and Berlin. You could visit all four of them by taking trains, or choose any one, two, or three. In December you can get quite a nice room in any of those cities, with Berlin being the most expensive by a bit. Food and attractions are also quite affordable in those cities.
Yes, I’ve been to all of the Nordic countries, but mostly during the summer months. However, I know that those Northern Lights tours are popular and well established. On one hand, you know you’ll be visiting areas where there is only a bit of sunlight in the middle of each day, so it won’t be great for general sightseeing. But the cold months are also the best Northern Lights months, and if you want to see them then it’s your best bet.
If you are really only going for 4 or 5 days you only have time to visit one or maybe two cities anyway. I’d say that Lisbon would be ideal and you’d have time also for a short visit to Porto or the Algarve in the south, or at least the historic small town of Sintra, which is near Lisbon. Lisbon has fantastic weather for Europe and it’s a lovely city with plenty to see and do.