the average amount of precipitation for the year in funchal is 596.9 mm (23.5"). the month with the most precipitation on average is december with 109.2 mm (4.3") of precipitation. the month with the least precipitation on average is july with an average of 2.5 mm (0.1"). there are an average of 87 days of precipitation, with the most precipitation occurring in december with 13 days and the least precipitation occurring in july with 1 days.