Hall signed a one-year contract with Watford in July 2012, along with seven new signings. Having not featured in any of Watford's games in pre-season due to a lack of fitness, Hall finally made his debut, coming on for Neuton in a second half, as Watford drew 2–2 with Bristol City on 22 September 2012. The next game, Hall scored his first goal in a 3–2 win over Huddersfield Town. Due to several injuries, Hall was limited to just 21 league appearances but remained a key part of Watford's squad as they finished 3rd in the table.