New York Weather In April 2025 In Celsius. In new york, the average seawater temperature in april is 45.1°f (7.3°c). Humidity 55% windspeed 22 km/h.

46 degrees fahrenheit (8 degrees celsius) the only. In fact, average temperatures range from a low of 51 degrees fareheit (10.5 celsius) to a high of 66 degrees farenheit (16 celsius).