Lisbon vs Porto

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Lisbon edges ahead as the better destination in December. Lisbon offers 7 hours of daily sunshine with only 9 rain days, while Porto sees 6 sunshine hours and 13 rain days.

Lisbon is on the cooler side at 14°C, requiring warmer clothing. Porto is cooler at 14°C.

For travelers who prioritize dry weather, Lisbon is the stronger choice in December. Lisbon receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Lisbon reaches an average high of 14°C (57°F) and drops to 10°C (50°F) at night during December. The daily temperature range is 4°C, meaning relatively stable temperatures from day to night.

Porto averages 14°C (57°F) for the high and 7°C (45°F) for the low, with a daily range of 7°C. The two cities feel quite similar in terms of temperature.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in December.

Lisbon receives approximately 79 mm of rainfall across 9 rain days during December. You can expect rain roughly every other day.

Porto sees 171 mm over 13 rain days. That makes Lisbon the drier option by 4 rain days and 92 mm of total precipitation.

Both cities share similar humidity levels at 65%.