The slope of the monthly temperature in Sydney is quiet different than the other two ones. In Sydney, July is the coldest month which is about 15℃; January and December have the highest temperature that is about 25℃. The slopes of the temperature in London and New York is very similar. They are just the opposite of that in Sydney, and the only difference between them is that the slope of London is a bit smoother than that of New York. The lowest temperature in New York is about 5℃ which is about 10℃ lower than that in Sydney, however, the highest one in New York is about 30℃ which is just 5℃ higher than that in Sydney. I think the reason why causes the climates so different is the hours of sunshine for different areas. Sydney has the most hours
