The graph produces the average monthly temperatures and also average number of sunshine for per year in three cities particularly London, New York, Sydney.
Overall, the total annual hours of sunshine was different in three cities, however New York was higher than Sydney and London.
Going into the details, the temperature in Sydney was 25 degree in January and it continued 2 months. After March the degree started slightly decrease, until June the temperature declined to 15. It is clear that, after July the degree of sunshine again started rose. But increased slightly and the degree increased the same, like a start of year.
In contrast, London and New York was lower temperature at the beginning of the year (from January to March). In London’s sunshine degree was around 9-10, while in New York was 4-8. From April to June twice cities steadily rose to higher degree than starting of the year. The temperature of New York was increased to 26-27, in London to 20 degree. After July both cities started slightly decrease, until December their degree dropped to 5 (New York) and 10 (London).