On Sunday, when the decorated cars of the annual flower parade are parked at the Gedempte Oude Gracht, you can visit the special flower market.
When Caroline and me arrived there in the morning (close to 10 am), most people were busy putting up their stand.
On saturdays and mondays there always is a market on the 'Grote Markt'. On the market almost everything is sold: clothes, cloth, food (fish, wafels, fruit), flowers, shoes etc. etc. On other days you can find markets on other places in Haarlem. Monday: market at 'Grote Markt' and 'Botermarkt' (center of town), Tuesday: market in Schalkwijk (south of Haarlem, near shoppingmall), Wednesday: no market, Thursday: market at 'Floresstreet', Friday: market at 'Zomerkade' (east of Haarlem), Saturday: market at 'Grote Markt' and 'Botermarkt' and Sunday: no market.
Haarlem has a busy market at the town centre each day. Check out the flower stand - there were flowers, flowers everywhere!