May in Semey averages a daily high of 22.5°C with nights around 7.7°C. Expect roughly 8.6 wet days totalling 27.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Semey is August–September.
Based on SEMEJ, KZ (3.6km), 1995–2024. 30 years of May data.