Mérida has throughout the year a free, mountain climate, with an average temperature of 19 deg. In the wet season (May until November) evening rain is almost a certainty, and snows a possibility. Even in the dry season, rain is possible due to the Altitude, but generally the weather is fresh and fine during the days. Most European and North American tourists feel comfortable in the city for just this fact. But be warned if you are going up into the mountains- the weather can change dramatically and quickly, and the sun burns fast due to the altitude.