Cross the border Mexico is another destination where travelers might luck into lower prices, although the crowds aren't as likely to thin out that much. That's because some popular spots like Cancun, on the Yucatan peninsula, aren't all that much hotter in the summertime. From January to March, average temperatures range from a low of 68 to a high of 86, while from July to September they range from 75 to 91. Summer becomes a time for students and people who want just a less expensive vacation. If the Caribbean is what you've got in mind, this may be a fine time to hit the open seas, Loucks said.
Resorts offer less expensive rates, too.
Go west Arizona's another steamy destination where travelers can stretch their dollars a little further. Just remember, it's dry heat. Hawaii's another spot with some surprisingly good deals at the moment, Loucks said. But that may have less to do with the season than with the economy in Japan, a big tourist market for Hawaii. Not all sunny summer spots will necessarily translate into big seasonal deals.