When is the best time of year to visit New York City?

If you're the type of person who likes outdoor activities then the months of May, June and September are optimal. The weather is warm, but not oppressively hot. And the crowds of summer are not present.

If you want to catch a holiday vibe then the period from the end of November (which coincides with Thanksgiving in the U.S.) to the end of December are great times to spend in the city. The weather will be cool to cold so dress warm.