Growth of and irrigation water demand on cotton may be challenged by future climate change. To analyze the global cotton production and irrigation water consumption under spatially varying present and future climatic conditions, we use the global terrestrial biosphere model LPJmL. Our simulation results suggest that the beneficial effects of elevated [CO₂] on cotton yields overcompensate yield losses from direct climate change impacts, i.e., without the beneficial effect of [CO₂] fertilization.