Important celebrations, such as their famous 15-day Carnival in February, include bands of street musicians, jokers and song groups satirising social and political events at local and national level. The islanders also place the greatest importance on events during March or April leading up to a remarkable display at Easter. Among others, the other highly significant event is the seafarers’ "Feria del Carmen", which takes place in mid July. In October, there are two great events in the calendar: for the past 14 years, there is the "Festival Coral del Atlántico" (Atlantic Choral Festival) which attracts important Spanish and world-wide choral groups, and also the "Festival de Cine Inédito" (Unedited Cinema Festival), celebrated in the tourist complex of Islantilla, which Isla Cristina shares with Lepe.

Carnival: 2nd fortnight in February
Easter: March-April
Romería de Maria Auxiliadora: 1st fortnight in May
Popular celebration of Maria Auxiliadora: 2ª fortnight in June
Romería de Nuestra Señora de la Esperanza: 2nd fortnight in June
Celebrations of the Virgen del Carmen: July 16th
Celebrations of the Virgen de la Esperanza: 1st fortnight in August
Celebrations of the Virgen del Mar: 2nd fortnight in August
Celebrations of San Francisco: 1st Sunday in September
Atlantic Choral Festival of Isla Cristina: 1st fortnight in October
Celebrations of Nuestra Señora del Rosario: 1st fortnight in October.