Many temples and shrines in Koyasan hold special ceremonies and events to mark the beginning of the new year, including traditional rituals and prayers.

Many temples and shrines in Koyasan hold Setsubun events, where attendees can participate in the traditional Japanese custom of throwing beans to drive away evil spirits and bring good luck for the upcoming year.

Held at the famous Danjo Garan complex, the Shuni-e Ceremony is a traditional Buddhist ritual that is performed to pray for peace, health, and happiness. Visitors can witness the colorful and solemn procession of monks during this event.

Koya-cho is known for its beautiful cherry blossom trees, and visitors can enjoy hanami (flower viewing) during the cherry blossom season in April. Many temples and gardens in Koyasan have stunning cherry blossoms that create a picturesque setting for visitors.

Kongobu-ji Temple, the head temple of the Shingon Buddhist sect, hosts the Spring Grand Service in May. This event includes ceremonies, chanting, and special rituals performed by the temple's monks.

Some temples in Koyasan hold the Goma Fire Ritual during the summer months, where participants can experience the traditional fire purification ritual believed to cleanse the mind and spirit.

Obon is a traditional Buddhist festival held in July to honor the spirits of ancestors. Many temples in Koya-cho hold Obon rituals, ceremonies, and lantern lighting events during this time.

Some temples in Koyasan host the Bonsho Festival, where visitors can participate in ringing the temple bells for good luck and spiritual blessings.

Koya-cho's lush forests and foliage make it a popular destination for autumn foliage viewing in September. Visitors can admire the vibrant colors of the changing leaves in the serene natural surroundings of Koyasan.

The Okunoin Cemetery, the largest cemetery in Japan and a sacred site in Koyasan, hosts the Lantern Festival in October. Thousands of lanterns illuminate the cemetery, creating a mystical atmosphere for visitors to explore.

While not a specific event, November is a great time to experience a traditional temple lodging (shukubo) in Koyasan. Visitors can stay overnight in a temple, participate in morning prayers, and enjoy vegetarian meals as part of the cultural and spiritual experience.

Some temples and gardens in Koyasan may host winter illuminations during December, where visitors can enjoy the enchanting light displays amidst the serene winter landscapes.