May in Lāhījān averages a daily high of 22.8°C with nights around 17.6°C. Expect roughly 7.9 wet days totalling 32.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Lāhījān is May–June.
Based on ANZALI, IR (56.1km), 1995–2024. 21 years of May data.