Coffee is one of the most weather-sensitive commodity markets in the world. Brazil produces roughly a third of global supply and Vietnam adds another significant share, and weather conditions in these two countries — particularly frost risk in Brazilian growing regions and drought in Vietnam — can move prices dramatically in short periods. The arabica-robusta split matters: arabica, traded on the ICE exchange in New York, commands premium pricing for its flavor profile and is used in specialty coffee; robusta, traded in London, is lower-cost and used primarily in instant coffee and espresso blends. The biennial production cycle in Brazil — alternate years of heavier and lighter yields — creates a predictable seasonal pattern in supply. Consumer demand for coffee is remarkably stable and growing, particularly in emerging markets where rising incomes drive adoption of coffee culture. Currency movements, particularly the Brazilian real against the dollar, affect farmer selling decisions and export competitiveness. For investors and companies managing commodity exposure, coffee futures are the primary hedging vehicle for both producers locking in forward prices and roasters managing input cost risk.