December in Mobile averages a daily high of 17.7°C with nights around 7.1°C. Expect roughly 11.3 wet days totalling 138.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Mobile is March–May.
Based on MOBILE DOWNTOWN AIRPORT, AL US (9.1km), 1995–2024. 28 years of December data.