A wet yard can feel and smell different from a dry one. Your dog may dislike the texture, have sore paws or feel unsure about a new toilet spot. Start with access to a safe place to toilet, not a battle over the lawn. If they can use a dry, sheltered surface or a short familiar route, offer it rather than leaving them outside until they give in.
Check paws for redness, injury or tenderness without forcing handling. Sudden reluctance to walk, limping or signs of pain need a vet check. If the dog strains without urinating, seek emergency veterinary care. The rainy-toilet article covers weather-related toilet planning, but wet grass may remain unpleasant even after rain stops.
On a dry day, let the dog explore a small section of the yard without asking them to toilet there. Reward a voluntary approach and allow them to leave. Keep any necessary wet-weather trip brief and secure. Never pull them onto slippery grass or punish an indoor accident. If the wet-ground fear grows or toileting remains difficult, ask your vet and a qualified reward-based professional.
Today, choose the safest place they will use and note whether the concern is the wet ground or going outdoors at all. The toilet need comes first.
Sources: Dogs Trust on positive toilet opportunities, VCA on paw conditions and tenderness, VCA on urinary emergencies.