Our plots and statistics are available for non-commercial use.
More formally, they’re available under a Creative Commons Attribution Non-Commercial 4.0 licence.
We’d love to licence our stuff for commercial use, but we use observations from the Bureau of Meteorology that are, in turn, not licensed to us for commercial use (yet!). But posting, tweeting or otherwise sharing our plots for non-commercial purposes makes up happy!
Info and sources of the data we use are summarised on GitHub.