January in Cadiz averages a daily high of 16.3°C with nights around 10°C. Expect roughly 8.1 wet days totalling 67.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Cadiz is May–September.
Based on CADIZ, SP (4.1km), 1995–2024. 28 years of January data.