| New Year’s Day | Monday, 1 January 2018 | Public | WA Wide |
| Australia Day | Friday, 26 January 2018 | Public | WA Wide |
| Labour Day | Monday, 5 March 2018 | Public | WA Wide |
| Good Friday | Friday, 30 March 2018 | Public | WA Wide |
| Easter Monday | Monday, 2 April 2018 | Public | WA Wide |
| ANZAC Day | Wednesday, 25 April 2018 | Public | WA Wide |
| Western Australia Day | Monday, 4 June 2018 | Public | WA Wide |
| Queen’s Birthday * | Monday, 24 September 2018 | Public | WA Most Areas |
| Christmas Day | Tuesday, 25 December 2018 | Public | WA Wide |
| Boxing Day | Wednesday, 26 December 2018 | Public | WA Wide |
