September in Asahikawa averages a daily high of 22.1°C. Expect roughly 12 wet days totalling 115.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Asahikawa is May–September.
Based on ASAHIKAWA, JA (0.4km), 1995–2024. 21 years of September data.