Weather will likely play an important role when you plan your trip to Sayulita, but bear in mind that cheaper options are usually available when the weather isn’t as good. The hottest months are usually May and June, with an average temperature of 26°C, while the coldest months are February and January, with an average of 22°C. The rainiest months in Sayulita are August, September, July and June, with each month seeing an average of 265 mm of rainfall.