April in Osnovyanskyi averages a daily high of 14.8°C with nights around 4.7°C. Expect roughly 9.9 wet days totalling 35.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Osnovyanskyi is May–June.
Based on KHARKIV, UP (8.4km), 1995–2024. 18 years of April data.