4.3.2. The Horizontal Distribution of Relative Humidity

The equatorial region is characterized by the highest relative humidity. Relative humidity gradually decreases towards the Tropical high pressure belts (between 25°—35° latitudes) . After this, the relative humidity again increases polewards. The zones of high and low relative humidity shift northward and southward with the apparent migration of the Sun, during the summer and winter solstices respectively. Relative humidity is maximum in the mornings and minimum in the evenings.