April in Harlem averages a daily high of 16.8°C with nights around 7.4°C. Expect roughly 11.6 wet days totalling 109.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Harlem is May–June.
Based on NY CITY CENTRAL PARK, NY US (3.8km), 1995–2024. 30 years of April data.