During summers, the temperature in Agra goes as high as 45 degrees, which makes it almost impossible to explore the monuments during the afternoon. But if this is the only option you have, then it is suggested that you should carry cotton clothes, sunglasses, and sunscreen. Carry your water bottle with you always. Try to visit the Taj Mahal early in the morning or late evening so that the weather of Agra will not hinder your experience to marvel at the beauty of this epitome of love.
This is the best time to visit Agra as by this time the heat has suppressed and the weather becomes pleasant. December and January are the chilly months than the rest of the year. So if you visit during this time, carry your woolens with you. October - November and February - March is the best time to visit the Taj Mahal due to the pleasant weather. You can stroll around the streets and enjoy your lovely time here.
Monsoon is also a good season to visit Agra. The Agra temperature will not be as high as in summers but the climate will be humid due to rain. There is not so much rainfall to spoil your plans. So you can explore the monuments and enjoy your trip. Drizzling can accompany you sometimes and make your trip pleasant and memorable. Carry an umbrella and raincoat with you and then you will be able to explore the beautiful Agra completely.