January in Carolina averages a daily high of 28.6°C with nights around 22.3°C. Expect roughly 18.8 wet days totalling 104.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Carolina is November–April.
Based on SAN JUAN L M MARIN INTERNATIONAL AIRPORT, PR US (8km), 1995–2024. 30 years of January data.