January in Caguas averages a daily high of 29°C with nights around 19.9°C. Expect roughly 15.3 wet days totalling 120.3mm. 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. 25 years of January data.