Weather will likely play an important role when you plan your trip to Cabo Viejo, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually April and May, with an average temperature of 27°C, while the coldest months are January and February, with an average of 25°C. The rainiest months in Cabo Viejo are October, November, June and July, with each month seeing an average of 312 mm of rainfall.