When to feed hummingbirds depends on where one lives and what species of hummingbirds are around. A person who lives in a climate that is warm all year or on the coast can feed hummingbirds throughout the year because birds that live in warm regions do not migrate.
In milder climates, people can begin to feed hummingbirds in the early spring. It is good to begin offering food to birds as soon as they arrive in a particular region so that the birds have a reliable source of nectar upon arrival. People in cooler climates can begin feeding hummingbirds later in the spring. Hummingbirds begin returning to northern areas in May and June, which makes those months ideal for setting out feeders.