SWN Festival 2021 has had 1 concert.

The last concert at SWN Festival 2021 was on October 15, 2021. The bands that performed were: Real Lies / Max Pope / The Bug Club / Lady Bird / Margot / Hamish Hawk / BABii / Coach Party / Panic Shack / George Cosby / Sinead O'Brien / Honeyglaze / Deadletter / The Goa Express / Wooze / The Lounge Society / Enola Gay / Lynks / Bleach Lab / Adwaith / Lice / Holiday Ghosts / deep tan / MarthaGunn / Naima Bock / VLURE / Larry Pink the Human / Hussy / Cheap Teeth / Melin Melyn / Blackaby / John Myrtle / Sister Wives / Clara Mann / Odd Morris / Cerys Hafana / Speedboat / XL Life / Rona Mac / Papur Wal / French Alps Tiger / Pys Melyn / Ailsa Tully / Hana Lili / Plastic Estate / Hyll / Thallo / Mace The Great / Eädyth / Shlug / SYBS / CLwb FUZZ / Dead Method / Blue Amber / DD Darillo / Zac White / Bonsi / Tiger Bay / Teddy Hunter / The Golden Dreggs / Sam Barnes / Rhodri Brooks / Ghostlawns / Shreddies / Red Telephone (UK) / Finn & The Jacques / Han L A / Exxxtasy / Pigeon Wig / Anna B Savage / Alice Low.