Most of the water a plant takes up is lost by transpiration, so anything that changes the rate of transpiration changes the rate of water uptake. A potometer is used to measure this uptake. Three environmental factors matter.
Light intensity. Stomata open in the light so that carbon dioxide can enter for photosynthesis. Brighter light means more stomata are open and transpiration increases. In the dark the stomata close, so transpiration is slow.
Air movement. Moving air blows away the humid air next to the leaf. Wind removes the water vapour, so the concentration gradient between the inside and outside of the leaf stays steep and transpiration is faster. In still air, vapour builds up around the leaf and the gradient is smaller. The same happens in very humid air.
Temperature. At a higher temperature water evaporates faster inside the leaf and the vapour particles move faster, so the vapour diffuses out faster. Transpiration is faster in warm conditions and slower in cool ones, so a plant in cool conditions takes up less water.