Birthday parties

For a truly special experience, celebrate your child's next birthday at Winchester Science Centre and Planetarium.

Have fun and be inspired in this unique birthday party setting! All children's birthday parties include unlimited time to explore the Science Centre’s 100 hands-on exhibits plus a party buffet. Optional extras include party bags and unforgettable shows in our hugely popular planetarium.

Please direct any queries to Please note birthday parties are not available from 30 November for the remainder of the year as a result of our Christmas experience.

Book now! Or check availability


Download your free Science birthday party invitations

Weekend kids birthday parties at Winchester Science Centre

For just £14 per child, enjoy unlimited play on the Science Centre's 100 hands-on exhibits and party food. One adult free for every four children.
Served in a private party room (yours for 1 hours) is a finger buffet that includes: 

  • Sandwiches (choose two different fillings): ham, jam, cheese or tuna 
  • Two other items: cocktails sausages, carrot and cucumber sticks, Pom-Bear crisps, fruit or breadsticks
  • Squash
  • Cup cakes

Party extras

Planetarium: £3.50 per person. See the What's On guide for the schedule or enquire for dates further in advance.

Party bags: From £2.50 per child. Items may differ from illustrated examples subject to availability.


Find out more about weekend parties

  • Choose from three available 1 hour sittings for party food: 11:30am, 1:00pm or 2:30pm
  • If you would like to bring a cake or any other items to make the party extra special, do discuss kids party ideas with our staff in advance
  • Please specify any dietary requirements when booking
  • Minimum of 6 children per weekend birthday party
  • Pre-booking is essential. Booking payment required with a minimum of 6 children. Additional children can be added to your booking at any time up to the Wednesday prior to the party date
  • Children's science birthday parties are available at weekends in Hampshire term time only
  • Please note, members of staff are always happy to help, but children & toddlers must be supervised by accompanying adults at all times, and are the responsibility of the hosts
  • Due to the design of the building, we are unable to allow helium balloons

Party Bags

Please note on occasion contents may differ subject to availability

Party Bag 1 - £2.50
WSC pencil, mini pincer, paper laser, bubble tub


Party Bag 2 - £3.50

WSC image pen, WSC bendy rubber, mini spinner, rocket balloon, bubble tub


Party Bag 3 - £4.50
WSC frosted pad, WSC atomic ball, WSC bouncing putty, punch balloon, bubble tub, ball popper


Party Bag 4 - £5.50

WSC  orbit torch, WSC atomic rubber, WSC pencil, rainbow spring, punch balloon, bubble tub, WSC bouncing putty, mini alien egg