What December feels like in Porto
For Porto, December is early winter on the calendar. Days are on the cool side, the kind of weather that suits brisk sightseeing. Little changes after sunset — nights are cool, only slightly below the daytime level. The air is damp, which makes cool temperatures feel colder, particularly in wind.
Rain in Porto in December
December is persistently wet here: some rain falls on about one day in 2. Rain tends to come in heavy bursts: about 13.3 mm (0.5 in) on an average rainy day. Across the year Porto averages about 11.3 mm per rainy day, so December is typical. It is among the three wettest months of the year.
Daylight and sunshine in December
In mid-December, sunrise is at about 7:53 am and sunset at about 5:07 pm (local time) — 9 h 14 min of daylight. Evenings are drawing in — 41 min less daylight than mid-November. About 71% of daylight hours are sunny; in short, there are plenty of bright spells.
How December compares to the rest of the year
December is the 2nd coolest month of the year in Porto. Compared with November, afternoons are 2.2°C (4°F) cooler, with 1 mm less rain. Temperatures keep falling into January. By January, typical highs are 13.1°C (55.6°F).
Who December suits
- Sightseeing: a good fit — daytime temperatures are fine for walking around.
- Parks & outdoor: less ideal — too cool to sit outside for long.
- Beach: less ideal — the sea air is too cool.
Tips for visiting Porto in December
Rain Protection
A packable rain jacket saves the day on showery afternoons.
Light Jacket
A light jacket or knit layer is enough for most of the day.
Quick questions
How warm is Porto in December?
Expect around 13.9°C (57°F) in the afternoon and 7.8°C (46°F) at night, which most visitors would call cool.
Does it rain a lot in Porto in December?
It does: about 13 rainy days bring roughly 173 mm, so plan some indoor options.
What should I wear in Porto in December?
Based on the averages: rain protection and a light jacket. There is little need to change for the evening.
Is December or January better for visiting Porto?
On our 12-month climate ranking, January comes out ahead (#11 of 12 vs #12).