June in Arecibo averages a daily high of 30.7°C with nights around 19.9°C. Expect roughly 13 wet days totalling 170.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Arecibo is December–March.
Based on ARECIBO OBSERVATORY, PR US (14.2km), 1995–2024. 27 years of June data.