December in Sousse averages a daily high of 19.5°C with nights around 9.7°C. Expect roughly 5.4 wet days totalling 28.5mm. 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. 10 years of December data.