Of Huatulco's bays, Bahia de Santa Cruz, Bahia Chahue and Bahia Tangolunda have the most tourist infrastructure, while Bahia Maguey and Bahia Chachacual are two of the prettiest.
For a complete array of services, including restaurants, grocery stores, banks and cinemas, head to the village of La Crucecita, about a mile inland from Bahia de Santa Cruz. There are lots of budget and mid-range hotels there as well.
The bays are great for snorkeling and diving, and boat tours are a good way to see the coastal sights. There's an eco-park in town, and a number of outfitters offer rafting, kayaking and horseback excursions in the surrounding area.
It's cheap and easy to move around between Huatulco's bays, thanks to local taxi and water taxi fleets. The land taxis congregate at designated stops where signs clearly advertise the rates. Most trips are under US$5.
Average daily high temperatures are over 90 degrees Fahrenheit for every month of the year. The rainy season runs from May to October.
To keep development under control, Huatulco has a six-story limit on buildings. A modern water treatment system aims to minimize the resort's impact on the ocean.
