Weather is probably a major factor when you plan your trip to Orselina, but bear in mind that cheaper options are usually available when the weather isn’t as good. The hottest months are usually July and August, with an average temperature of 15°C, while the coldest months are January and February, with an average of -1°C. The rainiest months in Orselina are August, October, May and November, with each month seeing an average of 211 mm of rainfall.