Savannas have hot, dry climates. Often sandwiched between rainforests, which drains off the water, savannas cover extensive areas in the Tropics and Subtropics of Central and South Africa, Central and South America, and parts of Australia. Savannas typically have three seasons, a cool and dry season, a hot and dry season, and finally a warm and wet season. Temperatures range from 17.9° to 22.4°C. Savannas receive from 13 to 102cm of rain per year.
Savannas have porous soil, with only a thin covering of nutrient rich matter, humus, savannas' soils contain usually low concentrations of nutrients. Still, savannas' soils have nutrients than rainforests' soils. With this amount of rainfall, savannas host mainly grasses, and a few trees.