December in Tijuana averages a daily high of 19.4°C with nights around 6.7°C. Expect roughly 6.8 wet days totalling 41.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Tijuana is May–November.
Based on SAN DIEGO BROWN FIELD, CA US (8.2km), 1995–2024. 28 years of December data.