I'm on the west coast of Australia
Yesterday was a beautiful sunny day 8-19C (46-66) where I was able to wear a sleeveless top while hiking yesterday.
However that's atypical and the only sunny day we had during the week with usual temps about 7-8 to 15 with rain.
This week coming up looks similar. Some of the minimums are a little higher - 10-11 which often happens with an overcast night.
I thought Septembers where I live were always cold and wet and basically like winter (here) but apparently this year has been unusually cold and wet.