The graph delineates the temperature differences among Paris, Boston, and Melbourne

The graph below shows the average monthly temperatures in three major cities

The graph delineates the differences among Paris, Boston, and Melbourne regarding the variations in their mean temperatures in each month of the year.
A glance at the chart reveals that similar climates happen in Paris and Boston when both cities experience lower temperatures between November and March and higher temperatures for the rest of the year. Meanwhile, Melbourne records the opposite cycle and the heat range in Melbourne is the narrowest compared to that in two other cities.

Paris and Boston witness the same climates when the temperature lines both soar from their lowest points in January and climax in August at just below 25 and 32°C, respectively, then sharply plummet until December. Boston is the only city of the three which not only has the coldest temperature in January at just under 5°C but also reaches the highest in the mid-autumn.

The reverse is the case in Melbourne when the gradation of heat goes by (diễn ra) contrarily. The climate in Melbourne is cooler between May and August, and hotter in the remaining months. The level of heat in Melbourne reaches its bottom in July at approximately 16°C, which is just over half of its peak in the first and last month of the year. It can be clearly seen that of the three cities' temperatures, Melbourne's is the most constant since it oscillates from 16 to 26°C, while Paris and Boston witness wider heat ranges, from 8 to 24°C and from 4 to 32°C, respectively.

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Please remember that in order to write 240 words, you will need to have 40 minutes to write an essay. You only have 20 minutes to write this essay. Therefore, you cannot write more than 175-190 words. Focus only on content delivery, not on an explanatory essay. Additionally, do not use Vietnamese text in your writing. While you will not be scored down for that, it will not add anything to your score since you are taking an English language test.

The measurements are not based on simply a year. It is based on an "undisclosed" year. Be accurate in your data presentation. When no year is provided, you must indicate so. The essay is simply too "wordy" you do not need to be highly descriptive in a task 1 presentation. You only need to be data accurate. Avoid writing overly long sentences as you do here. Those do not equal a complex sentence. Those are considered run-on sentences that prevent you from meeting the 3-5 sentence requirement per paragraph. You have to recognize when you cut the sentence short due to over information, which should be represented in a succeeding paragraph instead.

There are several overlapping points in the graph that you did not indicate in the report. You have to remember, when the instruction asks you to make comparisons where relevant, you have to find the overlapping point(s) and report it. If there are several, as in this essay, opt to use one or two representations. You don't have to report all the comparison points, just let the examiner know you were conscious of the instruction by including it in the report.