The best places in December with good weather and that are inexpensive and also fairly close to India are Sri Lanka and Thailand, and they are both mentioned in the article above. Sri Lanka is obviously closer and you have many nice and scenic areas in the hills as well as the beach areas along the southern coast. But Sri Lanka has many similarities to India, as you may know.
Impressive year-round, November in Sedona is a feast for the senses, offering perfect temperatures and colorful fall foliage along with its majestic red rocks. Sedona is rich in wellness activities, spa treatments, art galleries, and locally-made arts and crafts. Along the Verde Valley near Sedona, quaint wineries with passionate winemakers offer personal tours and tastings. Red Rock State Park, a nature preserve with stunning scenery, native vegetation, wildlife, and a wide variety of birds, is popular with hikers. Visitors can also tour by jeep, horseback, hot air balloon, or helicopter. Many travelers hike among the red rocks seeking the much discussed vortexes—places of energy that are said to come directly from the core of the earth. Whether they are truly healing areas is not clear, but there are believers who experience spiritual effects and others who simply enjoy the breathtaking views. L’Auberge de Sedona Resort, centrally located in Sedona’s Red Rock Country, provides access to these activities in addition to both fine and casual dining featuring seasonal menus and locally sourced foods. Accommodations are available in the main lodge or in secluded cottages with panoramic views and exquisite rustic indulgence.
From Atlanta, the places that come to mind with the theme of “nature” would be Costa Rica and Belize. Costa Rica is probably the better choice, as it famously has around a third of its land as natural parks. Much of it is jungle, and they have all sorts of activities including zip lining, but also canopy tours and much more. There is also the Arenal volcano there, which is really nice and has some fun hot springs around it. They also have beaches, of course, but there is plenty in the interior of the island to keep you busy. If you know a bit of Spanish, it helps, but most other visitors know little or none.
If you’re a bit more on the timid side, you can always use Yelp and TripAdvisor to get good insights on places people have visited. As a disclaimer, some of the ratings may not be accurate on these sites, so make sure you go through and read some of the more recent reviews that people have written. We did this for a few of the places we visited and had no issues.