The family of an Aboriginal woman who died in West Australian police custody may finally get the answers they seek about her final days.

Julieka Dhu, 22, died on August 4 last year after being held at the South Hedland Police Station because she reportedly owed about $1000 in unpaid fines.

Police said at the time that after complaining of feeling ill, Ms Dhu was taken to hospital three times and died on the final visit.

A two-week inquest into her death will be heard by State Coroner Ros Fogliani from November 23 to December 4 in South Hedland.

Ms Dhu's family have put the WA government under constant pressure to investigate what happened to her, holding rallies across Australia, including this week, to mark the anniversary of her death.

Premier Colin Barnett promised at a rally in October to do more about Aboriginal deaths in custody shortly after being mobbed by protesters on the steps of the parliament.

"I will do that. You then judge me on whether I succeed or not, but I give you that commitment today," Mr Barnett said.

The Liberal leader recently met with Ms Dhu's family in South Hedland, where they visited the cell where she was held before she died, and he promised to make the findings of any inquest public.