The best time to visit Ranthambore National Park is between October and June, with October to March offering the most comfortable safaris and April to June giving you the best odds of spotting a tiger. Sounds contradictory? It isn't, once you understand how the park actually works.
I remember planning my first Ranthambore trip years ago, completely confused by conflicting blog advice. Some said winter, some said summer. Turns out, both were right — just for different reasons. That's exactly what most guides get wrong: they pick one season and stop there.