best order to see perth sights in a single day?

For a full-day itinerary, consider starting outdoors at Kings Park and Perth Zoo. To stay comfortable if weather is a concern, move indoors to the Art Gallery of Western Australia and St Mary's Cathedral during the middle of the day. Afterward, stop by Central Park and wrap up in Leederville. For reference, monthly average temperatures peak at 24.9C in February and drop to 13.8C in August, with the best travel seasons being March to April and September to December.