The weather in London is crap. Crap. Crap. Crap.
People keep telling me that it will get better, but I've been here for six months and it's still crap. Actually, that's a little too harsh. The weather has changed from really crap to slightly less crap, so there has been some improvement. And there has been one day in the last six months where an overcoat wasn't absolutely necessary.
Canberra is not especially known for good weather. However, compared to London, the Canberra weather is awesome.