The primary feature of an arid climate is limited rainfall and high evaporation.

Arid climates, such as deserts, are characterized by very low precipitation, often receiving less than 10 inches (25 cm) of rain per year. Due to the lack of rainfall and high evaporation rates, these regions have dry conditions with little moisture available for vegetation. The high temperatures in many arid climates also contribute to increased evaporation, making it difficult for plants and animals to survive without adaptations to conserve water. These climates are typically found in regions like deserts, where the combination of limited rainfall and high heat creates harsh conditions.