January in Amman averages a daily high of 13.6°C with nights around 3°C. Expect roughly 5 wet days totalling 18.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Amman is October–November.
Based on KING HUSSEIN, JO (53.5km), 1995–2024. 17 years of January data.