April in Pamplona averages a daily high of 17.2°C with nights around 6.9°C. Expect roughly 11.5 wet days totalling 69.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Pamplona is May–October.
Based on PAMPLONA OBSERVATORIO, SP (0.6km), 1995–2024. 28 years of April data.