The charts depict in Kolkata the average monthly temperature and rainfall over the course of the calendar.
Overall, it can be seen from the graph that the first two months and the last two months have the lowest precipitation, whereas July and August have the highest rainfall. By contrast, temperatures have fluctuated over the period shown.
Looking at the graph in more detail, January has the lowest rainfall in Kolkata, at 9 mm; after that, this figure rises moderately until July, reaching its peak at about 325 mm. June and July remain at the same level of the highest precipitation at 325 mm, and then from September to December, this figure goes down until the last month, between nearly 300 and 5 mm of rainfall in Kolkata province.
On the other hand, at the beginning of the period, Kolkata has the temperature of just under 20 °C, then it reaches its highest position in May at approximately 30 °C. Then this figure decreased slightly in June, around 28 °C, then remained the same until October, at about 28 °C. In Kolkata, this temperature has reduced moderately from October (nearly 28 °C) to December (20 °C).