March in Caguas averages a daily high of 29.7°C with nights around 19.8°C. Expect roughly 10.6 wet days totalling 104.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Caguas is December–April.
Based on TRUJILLO ALTO 2 SSW, PR US (11km), 1995–2024. 23 years of March data.