I'm recording here 2020's spring flowerings, the wisteria and jasmine in particular.
This year, the jasmine started coming out mid-August. This is roughly what I would hope for in a normal season: it was initially a late winter blossoming. In the recent climate-disrupted past, it had been coming out early to mid July at the earliest.
The wisteria started appearing last week - around the 10th of September. When it first started flowering, it had come out in early-mid spring, the first few weeks of October. It hasn't come out this early before.
I have to emphasise that this represents the immediate micro-climate at the front of our house. Other jasmine and wisteria around Sydney - and even around Coogee/Randwick - tends to flower earlier than ours, by several weeks.
So: in 2020 the jasmine came out at a more traditional time, and the wisteria is out a fair bit earlier.
If I were to pick a reason for the wisteria's differential, I might guess that because it spread onto the Bottlebrush and Lilly Pilly trees outside the gate, at least part of the wisteria is getting significantly more sun.
As you can see, it's all white this year - so far. When I planted it, the wisteria was a light side of purple. After a few years, the flowers along the side path emerged white, while the rest was purple. Now it seems to be white everywhere. On past experience, a few purple flowers may turn up in a few weeks.