Festival of the Sea 2018 - Casteldefels from July 12 to July 16. Past days. Thursday, July 12 Friday, July 13 Saturday, July 14 Sunday, July 15 Monday, July 16 You might be also interested in: Summer Fiesta 2018 - Alba-Rosa - 5 Kms. Fiesta of La Guàrdia 2018 - La Guardia - 13 Kms. Fiesta of La Floresta 2018 - La Floresta - 23 Kms. Fiesta of El Poble-Sec 2018 - El Poble-sec - 24 Kms. Fiesta of El Raval 2018 - El Raval - 25 Kms.