The market – which is based at the bottom of the former 3M building – has been sited indoors for more than 40 years.
Traders not moving outside will bid farewell this weekend, but some – including greengrocers Dudmans and Berkshire Meats – are set to take up a pitch outdoors.
The new outdoor market will be based in Bracknell High Street for about two years before moving to Market Square, following the redevelopment of the site of Winchester House.
Cllr Marc Brunel-Walker, executive member for economic development and regeneration at Bracknell Forest Council, said: “To have so many traders interested in being part of the new outdoor Bracknell Market is really exciting.
“We always hoped that an outdoor market would provide shoppers with the ability to buy traditional goods and wares associated with markets as well as other niche products, so it’s great news that we have so many traders interested in coming to Bracknell.
“The market will be temporarily placed in High Street (East) until it can be permanently placed in Market Square.
“The location and variety of stalls will really help to encourage more people to visit and shop in Bracknell town centre during its on-going redevelopment.”
The outdoor market will be open from 9am to 4pm every Friday and Saturday in the upper part of High Street near Peacocks.
It will offer a range of goods including jewellery, charcuterie, flowers, cakes and sweets.
The outdoor market will be officially launched on Friday, July 18, at 10am by the mayor of Bracknell Forest, Cllr Alan Kendall.
High Street traders and shopkeepers will then be invited to join the mayor and traders for celebratory refreshments.
The market is being relocated outside so Comer Homes can demolish and redevelop the Winchester House site, which was cited as a top priority by Bracknell Forest residents during a public consultation last year.
Comer Homes has indicated that demolition work on the former 3M office block will start in the autumn.