The graphs display the temperatures of three mega cities in each month of the year. Furthermore, the hours of having sunlight per city is shown in a table per city. Overall, the total trend of New York and London are similar together, having the highest temperature in the middle of the year while the lowest at the beginning and the end. However, the temperature of Sydney narrowly fluctuates. About the amount of sunshine, there is a similarity between New York and Sydny, and London is different.
Regarding the trend of average temperature in each month, at the start of the year, in January, the temperature of New York is 5 degrees and it constantly rises until July which it reaches its peak at 30 degrees. On the following months, we are witnessing a gradual fall until December that the temperature goes back to 5 degrees. The total trend of London is the same as New York but starting at less than 10 degrees, peaking to 25 and then falling to 10 again. About Sydney, however, its trend completely varies. The overall temperature fluctuates between 15 and 25 degrees, which July is the coolest time of the year.
Turning to the table, New York and Sydney are exposed by the sun about 2500 hours in a year while this amount is less than half of the other two cities in London, with the amount of about 1200. Therefore, there is no meaningful correlations between hours of sunshine and the temperature trend.