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Top Birthday Party Venues for Adults in Cardiff
Another trip around the sun deserves something better than a crowded corner table. Birthday party venues for adults in Cardiff include stylish cocktail bars along St Mary Street, elegant private dining rooms, and exclusive spaces around Cardiff Bay where the celebrations don't have to end after dessert. Milestone birthdays call for somewhere with a little more character, whether you're planning a relaxed dinner, a lively drinks reception, or a dance floor that stays busy well into the night. Take a look below and find the party space that suits your celebration.
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![Viewing Deck at Lo Lounge in Cardiff]()
from £125
hire fee / per afternoonCheck availabilityViewing Deck
120 guestsLo LoungeCardiffLLisa K.
“They would hard all night. Location was great over looking the bay. Would highly recommend booking this venue.” -
![PARTY AND EVENT VENUE at DNC BAR in Cardiff Centre]()
from £100
hire fee / per sessionCheck availabilityPARTY AND EVENT VENUE
120 guestsDNC BARCardiff Centre
#Supervenue
BBella H.
“The venue was a great size, places to sit down, could connect to the speaker” -
![Rockpools Dining Area at The Botanist Cardiff Bay in Cardiff]()
from £800
minimum spend / per sessionCheck availabilityRockpools Dining Area
30 guestsThe Botanist Cardiff BayCardiffHHelena K.
“28 of us celebrated a special birthday at the rock pool area. Food and drinks were lovely.” -
![Private Upstairs Room at O'Neill's Trinity Street Cardiff in Cardiff Centre]()
from £200
minimum spend / per sessionCheck availabilityPrivate Upstairs Room
100 guestsO'Neill's Trinity Street CardiffCardiff Centre
#Supervenue
CChristopher W.
“Great size venue for our party and brilliant location.” -
![Premier Lounge at Cardiff City Stadium in Cardiff Outskirts]()
from £235
hire fee / per sessionCheck availabilityPremier Lounge
600 guestsCardiff City StadiumCardiff OutskirtsAAlun J.
“Splendid venue and excellent support from the duty staff and the events planner.” -
![Private Dining Room at The Botanist Cardiff Central in Cardiff Centre]()
from £300
minimum spend / per sessionCheck availabilityPrivate Dining Room
12 guestsThe Botanist Cardiff CentralCardiff Centre
#Supervenue
MMaggie N.
“Great private dinning space which allowed us to be comfortable with our mixed group which included toddlers.” -
![Conservatory (2nd Floor) Bar at The Botanist Cardiff Central in Cardiff Centre]()
from £1000
minimum spend / per sessionCheck availabilityConservatory (2nd Floor) Bar
90 guestsThe Botanist Cardiff CentralCardiff Centre
#Supervenue
WWendy
“The atmosphere very good and topped with beautiful weather. The manager on the night was helpful and friendly.” -
![Bar 3 at Bonnie Rogues Pub in Cardiff Centre]()
from £250
minimum spend / per sessionCheck availabilityBar 3
120 guestsBonnie Rogues PubCardiff CentreAAngela D.
“The area was perfect for our event. Easy access to the bar.” -
![Bar 4 at Bonnie Rogues Pub in Cardiff Centre]()
from £250
minimum spend / per sessionCheck availabilityBar 4
250 guestsBonnie Rogues PubCardiff CentreMMartina F.
“Excellent space! In the mix so we still benefitted from the atmosphere of the bar, and easy access to drinks.” -
![The Greenhouse at The Botanist Cardiff Central in Cardiff Centre]()
from £500
minimum spend / per sessionCheck availabilityThe Greenhouse
30 guestsThe Botanist Cardiff CentralCardiff Centre
#Supervenue
IIwan S.
“Great little space, set off from the main restaurant. Worked great for our family celebration.” -
![Upper Level at Be At One Cardiff in Cardiff Centre]()
from £250
minimum spend / per sessionCheck availabilityUpper Level
100 guestsBe At One CardiffCardiff CentreAt Be At One Cardiff, our Upper Level offers the perfect space for your next private event. Whether you’re hosting a corporate function, a birthday celebration, or a festive Christmas party, this exclusive area provides a -
![Full Venue Hire at Tonight Josephine Cardiff in Cardiff Centre]()
from £500
minimum spend / per sessionCheck availabilityFull Venue Hire
250 guestsTonight Josephine CardiffCardiff CentreTonight Josephine Cardiff offers a unique event and party space that spans two floors, and is the first bar to sport Josephine’s newest look. With updated neons, daring green hues and disco balls galore – it’s the ideal hangout
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FAQs about Top Birthday Party Venues for Adults in Cardiff
Booking costs of birthday party venues for adults average £500 minimum spend per event. Costs vary depending on guest capacity, popularity, location, and amenities like sound systems or bar services. Extra charges may apply for custom catering, decor, or event planning services. Packages with add-ons, such as DJs, photo booths, or other entertainment services, can also increase the overall cost. Check out the typical price ranges in Cardiff, based on Tagvenue data from August 2026:
| From £300 | to £1500 | minimum spend per event |
| From £12 | to £35 | per person |
| From £100 | to £250 | hire fee per event |
Based on the popularity and user ratings on Tagvenue (updated August 2026), the best options include:
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Viewing Deck at Lo Lounge in Cardiff - rated 5/5
Our user said: ‘Location was great over looking the bay. Would highly recommend booking this venue.’ -
Private Upstairs Room at O'Neill's Trinity Street Cardiff in Cardiff Centre - rated 5/5
Our user said: ‘Venue was great size, bar staff were brilliant...’ -
PARTY AND EVENT VENUE at DNC BAR in Cardiff Centre - rated 4.8/5
Our user said: ‘Staff were fantastic, venue is perfect for an 18th party.’
You'll find birthday party venues for adults in various sizes, from smaller spots to larger venues; keep in mind that the type of space and your chosen layout will affect the capacity! Below you can see the typical venue sizes in Cardiff, together with the standard prices in each size range, based on Tagvenue data (August 2026):
| Small | up to 50 guests | prices average £25 hire fee per hour |
| Medium | between 70 and 120 guests | prices average £500 minimum spend per event |
| Large | over 160 guests | prices average £500 minimum spend per event |
These are the venues within 0.1 mi from central Cardiff, available to book on Tagvenue:
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Top Bar at Slug and Lettuce Cardiff Central
on 84 Saint Mary Street - 0.1 mi from centre.
Venue said: With three floors of stylish interiors, it’s a go-to for catch-ups, hen parties, and private events. From small plates and nibbles to classic British mains, the menu has something for everyone. -
Full Venue Hire at The Cocktail Club Cardiff
on 75 Saint Mary Street - 0.1 mi from centre.
Venue said: Take over The Cocktail Club Cardiff and throw a party that hits different. From iconic interiors and banging playlists to outrageous cocktails served by expert bartenders, this is the ultimate space for celebrations that... -
Bar 3 at Bonnie Rogues Pub
on 42-43 St Mary Street - 0.1 mi from centre.
Our user said: ‘Excellent space! In the mix so we still benefitted from the atmosphere of the bar, and easy access to drinks.’
Based on Tagvenue data (as of August 2026), users looking for birthday party venues for adults most commonly go for these venue types:
| Bar | prices average £500 minimum spend per event | typically between 70 and 280 guests |
| Event Space | prices average £240 hire fee per hour | typically between 70 and 120 guests |
| Restaurant | prices average £800 minimum spend per event | typically between 30 and 90 guests |
| Pub | prices average £400 minimum spend per event | typically between 80 and 120 guests |
| Cocktail Bar | prices average £150 hire fee per event | typically between 70 and 100 guests |
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Page last updated in August 2026
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