May in Montero averages a daily high of 27.4°C with nights around 17.1°C. Expect roughly 8 wet days totalling 43.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Montero is July.
Based on VIRU VIRU INTERNATIONAL, BL (36.2km), 1995–2024. 21 years of May data.