Trevelin ground for long periods of time. Winters are stormy with frequent rain, sleet and snow while summers are cool, windy and relatively dry. Mean annual precipitation is . The precipitation pattern resembles a Mediterranean one, where most (75%) of the precipitation is concentrated from April to August, the cooler months with a dry period from September to March. Snowfall can occur during the colder months while rainfall predominates in warmer months; hail rarely occurs. The mean temperature in Trevelin ranges from in July, the coldest month to in January, the warmest month. Frosts can occur at anytime, even in summer,
Reindeer hunting in Greenland there can be cornices, crevasses, and avalanches, although snow can make it easier to spot and track reindeer. The weather during the beginning of the autumn hunting season is often pleasant, relatively warm, and mild, but it can change very quickly. Hunters may encounter fog, rain, wind, and winter conditions. Occasionally the situation can quickly approach a worst-case scenario with events such as katabatic winds, storms, snow, hail, sleet, freezing rain, blizzards, and polar cyclones, even in the late summer. Lack of preparation can have fatal consequences. Using a compass in Greenland involves accounting for a very extreme magnetic declination.