Roraima: Always On Cloud Nine

Dramatic clouds, heavy rains, and misty fog combine to create a climatic environment unlike anywhere else on Earth. Adiabatic cooling on Mount Roraima causes the formation of cirrostratus clouds and frequent rain. As moist air rises and multiplies, it cools and allows for the production of these specific clouds. The adiabatic process claims sole responsibility for the extraordinary cloud formations and numerous rain showers. Roraima's moist air rises, swells, and cools as it reaches the dew point. The ground gives birth to an eerie radiation fog when the rain ceases to fall.

High clouds and fog engulf the mountain top. Photo from http://dinets.travel.ru/roraima.htm

The mist sets in on Roraima. Photo from http://dinets.travel.ru/roraima.htm

Roraima has an equatorial and tropical climate type. Average temperatures are 24 degrees Celsius to 26 degrees Celsius. On the summit, temperatures can drop as low as 4 or 5 degrees Celsius. On account of the large amount of moisture existing in the air, humidity levels can reach a staggering 90%. Humidity, rain, and fog cause a physical struggle for the hiker. Proper gear is paramount if you desire to climb this mountain.



The steady rainfall makes for a much more arduous hike. Photo from http://lagransabana.com-venezuela/