Average Temperature: 12℃
- Highest Temp: 16℃
- Lowest Temp: 9℃
Chances of Rain: December and January are the wettest months of the year, with 10 days of rain each month.
What to Wear: The temperatures drop in December, and the weather becomes slightly breezy and chilly. A moderate sweater would be enough to keep you warm for the month of December in Lisbon if you are comfortable in the cold, else something slightly warmer.