Nightmare Halloween Experience Cardiff 👻😈
Sat 31 Oct · 20:00
O'Neill's St Mary Street
Venue events →
Similar events
View all →About This Event
Prepare yourself for a truly terrifying evening as O'Neill's on St Mary Street in Cardiff hosts its Nightmare Halloween Experience this Saturday, October 31st. The frights commence at 8pm, promising a night of ghoulish delights and spine-chilling fun. Attendees are strongly encouraged to embrace the spirit of the season by donning their most creative and frightening fancy dress. Whether you opt for a classic monster, a spooky specter, or something entirely unique, your costume could be the talk of the night. Ticket prices are incredibly accessible, ranging from a mere £1 for early birds to £15 for those seeking a more premium experience, ensuring everyone can join in the macabre festivities. This promises to be an unforgettable Halloween night, packed with atmosphere and a healthy dose of fear.
The event features full venue Halloween decorations, spooky drinks, haunted special effects and production, and much more. The atmosphere is set to be electric, with a focus on providing a unique and unforgettable experience for attendees.
Halloween fancy dress is highly encouraged but not compulsory, allowing attendees to get creative with their costumes. The event operates a student-friendly policy, welcoming guests, friends from home, partners, and others, in addition to students.
The event takes place at O'Neill's St Mary Street in Cardiff, with a start time of 8pm on October 31st. Ticket prices range from £1 for early birds to £15 for a premium experience.
Details written from the information supplied by the event organiser.
Similar Events in Cardiff
View all →
£8TREE HOUSE FIRE - Halloween Skank @ Black Cat, Bridgend
Fri, 30 Oct 2026
Black Cat Bridgend
£20.21Old Skool Bingo Sat 31st Oct halloween Cardiff Special
Sat, 31 Oct 2026
District Cardiff
From £6Black Parade - 00's Emo Anthems Halloween Party | Cardiff
Sat, 31 Oct 2026
The Globe Cardiff
£22.38Tŷ Hafan Dark Run 2026
Sat, 17 Oct 2026
Bute Park
£6A Big DIY Halloween Punk Party!
Fri, 30 Oct 2026
Bar 105
From £4.99CARDIFF HALLOWEEN 🎃 - THE ASYLUM - Sold out 10 years running!
Fri, 30 Oct 2026
Cardiff Best Venue
More at O'Neill's St Mary Street
View all →
From £11.55Motown Daytime Fever - Cardiff
Sun, 30 Aug 2026
From £16.96Pitbull UK - Mr. Worldwide Tribute - Cardiff
Sat, 12 Sept 2026
![Cardiff MET Freshers Opening Party - St Marys Street [Refundable]](/img/460/aHR0cHM6Ly9mYXRzb21hLmltZ2l4Lm5ldC9XMXNpWmlJc0luQjFZbXhwWXk4eU1ESTJMekV2TWpFdk1UTXZOaTh5THpRNU5DOVNZV05yVFhWc2RHbHdZWEowTWpBeU5qQXhNakV0TlRrdE1USnJOSGx3TkM1d2JtY2lYVjA.webp)
From £1Cardiff MET Freshers Opening Party - St Marys Street [Refundable]
Sat, 19 Sept 2026
![Cardiff Freshers Opening Party - St Marys Street [Refundable]](/img/460/aHR0cHM6Ly9mYXRzb21hLmltZ2l4Lm5ldC9XMXNpWmlJc0luQjFZbXhwWXk4eU1ESTJMekl2TWpBdk1UWXZNUzh5TWk4Mk56Z3ZVbUZqYTAxMWJIUnBjR0Z5ZERJd01qWXdNVEl4TFRVNUxURXlhelI1Y0RRdWNHNW5JbDFk.webp)
From £1Cardiff Freshers Opening Party - St Marys Street [Refundable]
Sat, 26 Sept 2026
Frequently asked questions
Nightmare Halloween Experience Cardiff 👻😈 takes place on Saturday, 31 October 2026 at 20:00.
Nightmare Halloween Experience Cardiff 👻😈 is held at O'Neill's St Mary Street in Cardiff (85-87 St Mary St, Cardiff CF10 1DW, UK, Cardiff, CF10 1DW).
Tickets for Nightmare Halloween Experience Cardiff 👻😈 range from £1 to £15. Live prices and availability are shown on Fatsoma.
Tickets for Nightmare Halloween Experience Cardiff 👻😈 can be booked via Fatsoma using the "Check Tickets & Live Prices" button on this page, which opens the official booking site in a new tab.
Staying overnight?
Hotels within walking distance of O'Neill's St Mary Street.
Ad · Booking.com affiliate link
From
£1
Nightmare Halloween Experience Cardiff 👻😈
Editorial Summary
Prepare yourself for a truly terrifying evening as O'Neill's on St Mary Street in Cardiff hosts its Nightmare Halloween Experience this Saturday, October 31st. The frights commence at 8pm, promising a night of ghoulish delights and spine-chilling fun. Attendees are strongly encouraged to embrace the spirit of the season by donning their most creative and frightening fancy dress. Whether you opt for a classic monster, a spooky specter, or something entirely unique, your costume could be the talk of the night. Ticket prices are incredibly accessible, ranging from a mere £1 for early birds to £15 for those seeking a more premium experience, ensuring everyone can join in the macabre festivities. This promises to be an unforgettable Halloween night, packed with atmosphere and a healthy dose of fear.
This summary was automatically generated from event data sourced from official ticketing providers.
Details
The event features full venue Halloween decorations, spooky drinks, haunted special effects and production, and much more. The atmosphere is set to be electric, with a focus on providing a unique and unforgettable experience for attendees.
Halloween fancy dress is highly encouraged but not compulsory, allowing attendees to get creative with their costumes. The event operates a student-friendly policy, welcoming guests, friends from home, partners, and others, in addition to students.
The event takes place at O'Neill's St Mary Street in Cardiff, with a start time of 8pm on October 31st. Ticket prices range from £1 for early birds to £15 for a premium experience.
Details written from the information supplied by the event organiser.
📍 Venue
O'Neill's St Mary Street85-87 St Mary St, Cardiff CF10 1DW, UK, Cardiff, CF10 1DW
Cathays, Cardiff
Get Directions →❓ Frequently asked questions
When is Nightmare Halloween Experience Cardiff 👻😈?
Nightmare Halloween Experience Cardiff 👻😈 takes place on Saturday, 31 October 2026 at 20:00.
Where is Nightmare Halloween Experience Cardiff 👻😈 taking place?
Nightmare Halloween Experience Cardiff 👻😈 is held at O'Neill's St Mary Street in Cardiff (85-87 St Mary St, Cardiff CF10 1DW, UK, Cardiff, CF10 1DW).
How much are tickets for Nightmare Halloween Experience Cardiff 👻😈?
Tickets for Nightmare Halloween Experience Cardiff 👻😈 range from £1 to £15. Live prices and availability are shown on Fatsoma.
How do I get tickets for Nightmare Halloween Experience Cardiff 👻😈?
Tickets for Nightmare Halloween Experience Cardiff 👻😈 can be booked via Fatsoma using the "Check Tickets & Live Prices" button on this page, which opens the official booking site in a new tab.
🏨 Staying overnight?
Hotels within walking distance of O'Neill's St Mary Street
Ad · Booking.com affiliate link
Tickets from
£1
Date
Until Saturday, 31 October 2026
Time
EventsList curates 134,000+ events across the UK. Tickets purchased via the venue or authorised sellers only.
More Events at O'Neill's St Mary Street
View all →
Motown Daytime Fever - Cardiff
📍 O'Neill's St Mary Street
£11.55 - £21.29
Pitbull UK - Mr. Worldwide Tribute - Cardiff
📍 O'Neill's St Mary Street
£16.96 - £24.54
![Cardiff MET Freshers Opening Party - St Marys Street [Refundable] at O'Neill's St Mary Street](/img/1920/aHR0cHM6Ly9mYXRzb21hLmltZ2l4Lm5ldC9XMXNpWmlJc0luQjFZbXhwWXk4eU1ESTJMekV2TWpFdk1UTXZOaTh5THpRNU5DOVNZV05yVFhWc2RHbHdZWEowTWpBeU5qQXhNakV0TlRrdE1USnJOSGx3TkM1d2JtY2lYVjA.webp)
Cardiff MET Freshers Opening Party - St Marys Street [Refundable]
📍 O'Neill's St Mary Street
£1 - £10
![Cardiff Freshers Opening Party - St Marys Street [Refundable] at O'Neill's St Mary Street](/img/1920/aHR0cHM6Ly9mYXRzb21hLmltZ2l4Lm5ldC9XMXNpWmlJc0luQjFZbXhwWXk4eU1ESTJMekl2TWpBdk1UWXZNUzh5TWk4Mk56Z3ZVbUZqYTAxMWJIUnBjR0Z5ZERJd01qWXdNVEl4TFRVNUxURXlhelI1Y0RRdWNHNW5JbDFk.webp)
Cardiff Freshers Opening Party - St Marys Street [Refundable]
📍 O'Neill's St Mary Street
£1 - £10
Similar Events in Cardiff
View all →
TREE HOUSE FIRE - Halloween Skank @ Black Cat, Bridgend
📍 Black Cat Bridgend
From £8.00
Old Skool Bingo Sat 31st Oct halloween Cardiff Special
📍 District Cardiff
£20.21
—
Black Parade - 00's Emo Anthems Halloween Party | Cardiff
📍 The Globe Cardiff
From £6.00
Tŷ Hafan Dark Run 2026
📍 Bute Park
£22.38
A Big DIY Halloween Punk Party!
📍 Bar 105
£6.00
—
CARDIFF HALLOWEEN 🎃 - THE ASYLUM - Sold out 10 years running!
📍 Cardiff Best Venue
£4.99
More things to do in Cardiff
- Fireworks Night· Sunday, 1 November 2026
- Christmas Wreath Making at The Cardiff Townhouse· Sunday, 6 December 2026
- Fireworks Spectacular at Llanerch vineyard - Friday 6th November· Friday, 6 November 2026
- Freshers 2026 - Halloweeen Spooktacular· Wednesday, 28 October 2026
- Dazed Halloween | Andy C, Sota, Ivy + more· Saturday, 31 October 2026
- Cardiff Christmas Lock and Key Party (Ages 30-45)· Friday, 13 November 2026
- Make Your Own Pumpkins· Saturday, 10 October 2026
- Christmas at the Musicals Llandaff Cathedral· Tuesday, 24 November 2026
- Christmas Party In The Pub at Village Cardiff· Friday, 27 November 2026
- The Mistletoe Ball· Saturday, 28 November 2026
- Christmas Party Night with Live Singer & Dancers at Village Cardiff· Thursday, 3 December 2026
- Coyote Country Christmas Party· Sunday, 6 December 2026