Environment
In general, savannas grow in tropical regions 8° to 20° from the Equator. Conditions are warm to hot in all seasons, but significant rainfall occurs for only a few months each year—around October to March in the Southern Hemisphere and April to September in the Northern Hemisphere. Mean annual precipitation is generally 800 to 1,500 mm (31 to 59 inches), although in some central continental locations it may be as low as 500 mm (20 inches). The dry season is typically longer than the wet season, but it varies considerably, from two to eleven months. Mean monthly temperatures are around 10 ° to 20 °C (50 ° to 68 °F) in the dry season and 20 ° to 30 °C (68 ° to 86 °F) in the wet season.
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