Ranthambore National Park has three very well defined seasons � summers, winters and monsoons. October and March are the time when the weather changes from monsoons to winters and from winters to summers, respectively. Most of the ungulates and the large predators spend the summer months in the valleys. The maximum day temperature often crosses 45 degrees C in May and June, when the relative humidity is at its lowest. The monsoons or the rainy season lasts from July to September.