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New York guide: 90-day visa-free stays, best in Apr–May or Sep–Oct for 15–21°C days near Central Park and Manhattan museums.

April, May, September, and October offer mild temperatures around 15–21°C (60–70°F), relatively low precipitation, and spring or fall scenery, with official tourism materials highlighting spring and especially fall as prime seasons for comfortable sightseeing and cultural events without peak-summer crowds.
July and August bring hot, humid weather often exceeding 29°C (85°F) with frequent heat advisories. Late November through December has very high visitor numbers and prices around the Thanksgiving parade and holiday season, creating peak-crowd, peak-price conditions.
Allowed stay
New York rewards travelers who time the city well: Apr–May and Sep–Oct bring 15–21°C (60–70°F) days for walking Central Park, browsing the Metropolitan Museum of Art, and eating through the West Village. Summer can exceed 29°C (85°F), while Nov–Dec draws heavy holiday crowds around Rockefeller Center and Fifth Avenue. With a verified 90-day visa-free allowance, visitors can slow down instead of racing between boroughs: pair Midtown theater nights with Brooklyn Bridge views, Queens food stops, and quieter mornings along the High Line before Manhattan’s peak commuter rush.
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