Climatraveler allows you to find travel destinations based on their climate at any time of year. If you're looking for someplace hot (but not too hot) in February, Climatraveler can hook you up. If you're looking for someplace to escape the summer heat, well, we've got you covered there, too.
The right weather can make or break a vacation. While you can't plan around weather predictions months in advance, you can plan around average climate factors. It's no guarantee of good weather, but it will get you into the right area.
I was having trouble planning a long trip based on my idea of the perfect climate (jeans and t-shirt weather), so I made this.
Brendan Dougherty - programmer and travel enthusiast turned webdev dilettante
The NCEP/NCAR 40-Year Reanalysis Project
NCEP Reanalysis data provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, from their Web site at http://www.esrl.noaa.gov/psd/