Australian Bureau Of Meteorology
The Bureau publishes lists of weather monitoring stations giving latitude and longitude for their Australian and Antarctic installations, in textual, fixed-column format. Although much of their data is subject to a mix of Australian Commonwealth Government and CC-by copyright, such items as this are available without significant restriction.
Response to Permission Equiry
User:M526244 has contacted officers of the Bureau to clarify the use of location data as described for use in OpenStreetMap and has received gracious permission to do so subject to:
Thanks for the email asking permission to generate maps for public access. It is acceptable to display this information on a map provided that you abide by the conditions specified on the Bureau's copyright page: