The graph illustrates average monthly figures for temperature and precipitation levels in Kolkata over the course of a calendar year.
Overall, it is clear that the city experiences rainfall year-round with heavy rainfall from June to September. Furthermore, the temperature is stable and high during the wet season and cooler during the dry season.
From January to May, both variables show a steady upward trend. Temperatures start at a minimum of 20°C in January and climb to a yearly high of approximately 30°C by May. Similarly, rainfall increases from 20 mm in January to 100 mm in May, marking the transition into the wetter season.
During rainny season from June to September, precipitation levels skyrocket, reaching a maximum of roughly 330 mm in July and remaining above 250 mm until September, while temperatures stay steady at just under 30°C. The year ends with a sharp fall in rainfall, dropping to a low of about 10 mm in December, while temperatures decrease gradually to the starting levels of January.