New Orleans lies close to the Gulf of Mexico, and has a subtropical climate with sticky summers, and warm winters. The best time to visit is between February, and April, when the weather is most agreeable, and this coincides with the Mardi Gras and also the famous Jazz Fest. From June until September, the high humidity ushers in the rather unpleasant hurricane season, before the weather becomes far more bearable in October. You get the cheapest deals on accommodation in New Orleans over Christmas, because it is low season for the city, although not every attraction will be open.