May in Pamplona averages a daily high of 21°C with nights around 9.8°C. Expect roughly 10.8 wet days totalling 63.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Pamplona is May–October.
Based on PAMPLONA OBSERVATORIO, SP (0.6km), 1995–2024. 28 years of May data.