Ken, this is a historical climate summary of my area. Alas, I haven't the faintest if 12a is correct. But it can be very hot and wet and humid. I tried to find a corresponding area in the US. The data is in centigrade and millimetres. Temp 9.5-29.4, rainfall 1840mm, humidity 60%.
http://www.bom.gov.au/climate/...
The Southeast of Queensland is one of the most biodiverse regions in Australia. It is humid subtropical or warm humid.
Peak daylily blooming is late October to early November.
In Australia, today is officially the first day of spring, 1 September. Happy SPRING all!