High altitude grazing is widespread around the globe and also has a long tradition in European mountain regions. One-Third of the Swiss farmland consists of summer pastures: seasonally used marginal pastures without permanent settlements, which extend between the grasslands and forests of permanent mountain settlements and unproductive mountain tops. Farmers' main motivations for using those pastures have been and still are forage provision and health benefits for grazing animals, benefits for labour distribution between home farm and summer farm, and cultural ecosystem services such as the maintenance of a tradition and the associated lifestyle. Yet, remote pastures are being abandoned and are prone to reforestation, while more productive and accessible pastures are intensified. Those processes are related to changes in management practices, to scarcity of labour and – to a lesser extent – to climate change. We summarise the agronomic and ecological status of Swiss summer pastures, in particular with respect to livestock keeping, biodiversity and climate change, and speculate on future trends of summer farming.