 In the highest parts of the sanctuary (páramo) the mean annual temperature ranges between 6 °C and 12 °C; while in the lowest (montane forest), it ranges between 22.5 °C and 24 °C.Precipitation in the páramo can be as low as 740 mm (March) and as high as 3422 mm (December); while in the montane forest precipitation fluctuates between 1150 – 1400 mm.Fog, rain and hail are frequent in the páramo.