January in Sousse averages a daily high of 18°C with nights around 8.2°C. Expect roughly 5.2 wet days totalling 19.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Sousse is October–April.
Based on KAIROUAN, TS (51.4km), 1995–2024. 17 years of January data.