Festivalen blev planlagt fra 21 jun til 23 jun 2013 (2 dag(e)).
Firefly Music Festival finder sted i Dover, United Kingdom. Her er den fulde adresse på festivalen: The Woodlands of Dover International Speedway, Dover
Red Hot Chili Peppers, twenty one pilots, LP, Kendrick Lamar, The Neighbourhood, Lord Huron, Calvin Harris, The Avett Brothers, Zedd, Ellie Goulding.
De mest populære genrer og undergenrer i den foregående udgave var:
rock
folk
electronic
indie rock
indie pop
indie
alternative
alternative rock
electropop
indie folk
post-punk
synth-pop
electronica
folk rock
pop rock
psychedelic
experimental
garage rock
indietronica