Chosen Answer:
It is more complicated than that because, at different temperature, the air can contain more or less humidity. For example, at 0 C, a cubic meter of air saturated with moisture (100 percent relative humidity) contains 5 grams of water. At 15 C, it will contain 13 grams and at 30 C, 30 grams.
It means that the relative humidity will vary in the course of a day. For example in my country, Norway, the temperature may be 0 C at sunrise. If the air is saturated and dew forms, then the absolute humidity is 5 grams per cubic meter. If the sun rises the temperature during the course of the day and it comes to 15 C, the relative humidity will then drop by 5 / 13 * 100 = 38 percent and that is relatively dry air!
This is why, even in the Sahara, reptiles and insects can survive with no rain, drinking only the dew early in the morning.
Usually we define climates to be dry or humid not by the relative humidity but by the yearly precipitations. For example, the average yearly precipitation on earth is just a bit under one meter. It means that all oceans, lakes and even outdoor swimming pools will rise by one meter each year. But it also means that the evaporation is exactly the same, a bit less than one meter because … what comes down must first go up! 
But that is an average. The average temperature is also a factor. For example, the town with the greatest rainfall in Europe is Bergen, in Norway. It is about two meters. But since Norway is a cold country, it doesn’t appear to be so much. The record for Bergen has been a continuous 91 days with rain. Of course, being “cold rain” the amount of water is not as much as say, for a tropical cyclone. But it is a lot of rain for its inhabitants and the non-official logo for the town is … an umbrella.
The reason for all that rain is that, the moist and mild air from the Atlantic meets the fjords and mountains of the south-west part of the country and, as the air rises, it condenses into precipitations of rain or snow.
by: Michel Verheughe
on: 8th April 13