Weather is probably a major factor when you plan your trip to Samieira, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and July with an average temp of 66°F, while the coldest months are February and January with an average of 49°F. The rainiest months in Samieira are October, December, November, and January, with each month seeing an average of 9 inches of rainfall.