If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Cabeceiras de Basto: The hottest months are usually August and July, with an average temperature of 20°C, while the coldest months are January and February, with an average of 8°C. The rainiest months in Cabeceiras de Basto are December, October, January and November, with each month seeing an average of 252 mm of rainfall.