I’m heading down unexpectedly to Melbourne and will have my 5yr old nephew along with scooter, skate board & bike. I’ll be staying close to the CBD and was looking for a (little) kid friendly skate park somewhere near the city. It doesn’t need to have small ramps as he loves the big stuff
Any skatepark is usually kid friendly, as long as it is the right time of day aka before it gets busy.
If you go to this link, it will show you City Park, you can then click on the ‘show parks nearby’ link and then see what else is around. Riverside (Alexandra Gardens) Melbourne City
One park that always has kids at it when I’ve visited is Elwood, which is really fun. It has more of a family friendly vibe going on compared to other skateparks. It is also reasonably close to the beach if that interests you also, it is supposed to be hot this weekend I hear. Elwood Bowls Melbourne