Rinse off any dirt with clean water from a garden hose. Dirt that is not rinsed off may become stuck to the wood. Run water through the garden hose for a few minutes prior to rinsing the wooden chair to avoid spraying the chair with any debris that may be inside the hose.
Move the chair to a location that is protected from rain and sun. While the wooden chair is drying, you do not want it to get rained on again. Direct sunlight will cause the wood to dry too fast in some areas, which can lead to cracks in the wood. Make sure the location also receives plenty of air circulation. Circulating fresh air is the best method for gradual drying.
Run a dehumidifier if the location is inside to maintain a steady humidity level and ensure slow, even drying. A dehumidifier may not be necessary if you live in desert areas with a dry climate. In more humid areas, a dehumidifier is essential for drying. Too much moisture in the air will not allow the wooden chair to dry naturally.