Rainfall Cabo San Lucas has an arid climate. Rainfall amounts of less than seven inches per year are average. There is really a short wet season which happens throughout the summer. Rainfall may be the result of occasional thundershowers that develop or when tropical cyclones grow to be active within the eastern Pacific. Hurricanes generally pass properly on the south or southwest of Cabo. Occasionally an upper air trough drops far enough south to steer a tropical cyclone onto the Baja peninsula. Many periods hurricanes weaken as they tactic the southern Baja. This can be on account of colder ocean h2o which robs the tropical cyclone of energy. Also, if a tropical cyclone is close to Cabo, it truly is normally the effect of an upper air trough pulling it northward. These southerly or southwesterly winds a lot of instances shear a tropical cyclone and weaken it. If hurricane can impact the southern Baja if it moves easily over the colder water to ensure that there may be small time for it to weaken. In this uncommon case, heavy rain and flash flooding can occur.