Common firecrests inhabit land and forest environments, specifically at elevations up to 1.8 kilometers. The species occupies temperate mixed forests with warm summers and many oaks, birches, and maples, as well as flooded meadows where water frequently covers the ground and there is abundant grass. The climate is consistently very wet with frequent rain and high humidity; summers are cool with significant rainfall and snow in winter, or summers are warm and pleasant with abundant rain, or summers are simply warm and winters are not very cold.