Sydney’s temperature record is just about as corrupted as it get, located adjacent to 21 lanes of asphalt and many buildings. It shows about 2C warming since the 1890s.
But if we move on up the coast to Newcastle Nobbys – which has one of the longest continuous temperature records in Australia , we see a completely different story. There has actually been no warming since the 1850’s at a station uncorrupted by UHI
It is quite likely that all claimed warming in New South Wales is due to UHI effects.