Desert Seasonal Precipitation: Effectively Zero Year-Round

Deserts are defined by aridity: <250 mm (10 in) annual precipitation. There is no meaningful "seasonal precipitation" pattern—rainfall is rare, unpredictable, and often evaporates before reaching ground.

Climate Context

• Hot deserts (Sahara, Arabian, Mojave): Summer maxima; winter rains possible but minimal.
• Cold deserts (Gobi, Great Basin): Winter snow; summer thunderstorms.
• Coastal deserts (Atacama, Namib): Fog drip exceeds rain; years with zero rainfall.

Instead of seasons, deserts pulse with episodic events—a single storm can deliver a year's moisture. Life adapts to boom/bust, not calendar.