Equatorial Rain - geography.

Equatorial Rain - geography. Cayenne, French Guiana A belt of dark blue on the map extends nearly unbroken around the globe. This belt indicates a region of heavy rainfall near the Equator. Along the Equator the sun is high in the sky year-round, and temperatures are consistently warm (see Equatorial Moderation Map Trek). The heat evaporates water at Earth's surface, keeping the air moist. In a process known as convection, the warm, mo...