June in Irun averages a daily high of 23.7°C with nights around 15.7°C. Expect roughly 13.7 wet days totalling 116.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Irun is May–October.
Based on SAN SEBASTIAN FUENTERRABIA, SP (2.4km), 1995–2024. 27 years of June data.