You'll likely spend much of your trip indoors, but if you're planning to venture beyond the casino, looking at local weather trends is a good idea. The hottest months are usually June and May with an average temp of 83°F, while the coldest months are February and January with an average of 79°F. The rainiest months in San Andres are December, January, October, and July, with each month seeing an average of 15 inches of rainfall.