Rainfall
Four months are of particular interest in the climatic pattern of the southern tip of Portugal affecting mainly the coastal zone: November, December, January and February with the highest rain patterns with more than 400 mm on average (MAOT, 2000). The limiting magnitude for this parameter was determined as 120 days/ year, while the total magnitude was the total days of the year (assumed as 365). Therefore, the correction factor for rainfall was determined as 0.6712 or 67.12%.