1. Falmouth International Sea Shanty Festival, 14th – 16th of June This festival celebrates its 10th year with 39 groups playing this promises to be a fun weekend. The Falmouth International Sea Shanty Festival is held at several venues throughout Falmouth but the main stages are Custom House Quay, Events Sq (Discovery Quay) and The Moor.
http://www.falmouthseashanty.co.uk
2. Lusty Glaze Midsummer Sundowner with Show Of Hands, 21st of June
This beautiful horseshoe shaped cove is becoming a prime location for live music. Show of Hands are one of the strongest current forces in acoustic music, with accolades such as Best Original Song and Best Duo at the Radio 2 Folk Awards.
Gates open at 18:30, with the support acts starting at 19:00 and Show of Hands playing at 21:00. There will be paella, burgers, pasties and premium brand lager on sale.
http://www.lustyglaze.co.uk 3. Polperro Music and Arts Festival, 15th – 23rd of June
This festival was revived in 1996 and celebrates the village’s traditional festivities, as well as live music, art, carnival, comedy, and a solstice bonfire. All these are held at various locations around Cornwall.
http://www.polperrofestivalsandlights.co.uk/ 4. Rock Oyster Festival, 21st – 23rd of June
A mid-summer celebration of food, music and art, the Rock Oyster Festival has live food demonstrations, music, and dance. There is stuff for kids too with face painting, circus acts and a sea shore scavenge.
http://www.rockoysterfestival.co.uk 
5. Beach Break Live, Newquay 20th – 24th of June
Taking place mainly on Fistral Beach, the Beach Break Live has live music from Devlin, Jake Bugg, and the Dub Pistols. It is held across all of Newquay with beach sports and various music in bars and cafes.
http://www.beachbreaklive.com 6. Mevagissey Feast Week, 23rd – 29th of June
This Festival has taken place in Mevagissey for hundreds of years and originally took place in December but this was a busy time out at sea for local fishermen so since the mid-eighteenth century it has taken place now. The event features exhibitions, demonstrations, live music and lots of fish dishes to eat. Along with choirs and bands, flora dances, children’s entertainment and competitions, plus colourful parades, boat and raft races, a fete and a huge firework display.
http://www.mevagisseyfeastweek.org.uk
7. Kneehigh’s Tristan & Yseult, Hall for Cornwall 25th – 29th of June
Cornwall’s most famous and favourite theatre company comes to Hall for Cornwall. Cornish King Mark is at war; he rules with his head not his heart. But he hasn’t counted on falling head over heels for his enemy’s sister, or expected the arrival of the enigmatic Tristan.
This critically acclaimed production catapulted Kneehigh onto the national stage. This is the original tale of forbidden desires, broken hearts and the agony of choosing one human being over another. Seen through the eyes of the 'Unloved', Tristan & Yseult blends comedy, live music, grand passion and tender truths, in an irresistible night of love.
The Guardian says: ‘I loved it with a passion.’
www.hallforcornwall.org 8. Thundercat National Championships, Watergate Bay Newquay 28th – 30th of June
Brace yourself for the white knuckle ride of the Thundercats. The surf powerboat catamarans will race close to the shoreline in circuit races, fighting the incoming surf.
9. Eden Sessions Kaiser Chiefs, Saturday 29th of June
The Kaiser Chiefs’ live shows are legendary, with appearances at the Reading and Leeds Festivals and T in the Park, and the Coachella Festival in California.
The Leeds lads are key players on the indie rock scene, and their songs such as Ruby, I Predict a Riot, Oh My God and Never Miss a Beat have become an essential part of the modern British soundtrack.
All four of the Kaisers’ studio albums have reached the top ten, and their 2005 debut Employment has sold two million copies.
http://www.edenproject.com 10. Newquay Surf 7s, 29th – 30th of June
Newquay Surf 7's in Cornwall is the biggest Rugby Sevens event in the South West.
Newquay Surf 7s is held in Newquay Sports Centre. There is no charge for spectators, giving everyone the chance to watch sevens rugby at its very finest.
http://www.newquaysurf7s.co.uk/