April in Yuzhno-Sakhalinsk averages a daily high of 7.1°C with nights around -2.5°C. Expect roughly 10.4 wet days totalling 55.5mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Yuzhno-Sakhalinsk is June–September.
Based on JUZHNO SAHALINSK, RS (1.3km), 1995–2024. 25 years of April data.