As Halloween is set to approach on October 31, people were seen participating in the. Halloween is set to be celebrated around the world on Saturday, October 31, in Dublin. As the spooky festival is around the corner, people are already seen participating in parades and public events to involve themselves in trick or treat, seen in vibrant, eerie attire. Thousands gathered in Dublin for 'Fiáin' on October 26, 2026.