May in Tarbes averages a daily high of 20.1°C with nights around 9.8°C. Expect roughly 14.9 wet days totalling 108.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Tarbes is June–October.
Based on TARBES OSSUN, FR (7.7km), 1995–2024. 30 years of May data.