Coimbra weather in December
December in Coimbra: cool, rainy, with clean air — a good time to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#11 of 12 months in Coimbra · #800 of 1413 destinations to visit in December · comfort 67/100 (tier C)
- Days
- 15°C
- Nights
- 7°C
- Wet days
- 11
- Sun
- 6.5 h
- Humidity
- 85%
- Daylight
- 9 h

Traveller notes on Coimbra in December
Other months in Coimbra
Forum posters describe November in Coimbra as genuinely variable - one visitor's four-day stay brought rain almost every day, while posters more broadly describe a typical visit needing only a shower or two in the morning, with some years bringing lots of warm weather punctuated by the odd rainy day and chilly evenings. Posters consistently recommend packing a raincoat and umbrella, and good walking shoes given how slippery Coimbra's cobbled streets get when wet. Posters are direct that November counts among Portugal's more difficult, rain-prone months overall, but also one of the least touristic alongside January, meaning shorter lines and quieter sightseeing at Coimbra's university and historic sites. Posters generally rate November as genuinely rain-prone but rewarding for a Coimbra visit, with low crowds a real upside of the wetter shoulder season.
Forum posters describe May in central Portugal as edging toward summer, with typical daytime temperatures in the 20-23C range cooling to around 13C overnight. Opinions on packing split a little: some posters say shorts and sandals are enough given how close the weather is to summer, while others recommend bringing a light jacket since rain remains a real possibility this early in the season. For Coimbra specifically - a university town known for its historic architecture along the Mondego river - posters describe it as a pleasant, walkable size for a day or two, with a genuinely hot day always possible even in May, per one visitor who ducked into a shopping mall's food court specifically to escape unexpected heat.
Add your own note from Coimbra's card on the map.
Coimbra climate normals — December
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Coimbra in December
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsChristmas market and lights, Christmas holidays in Portugal, school holidays in 7 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Coimbra's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherCoimbra's best weather comes in May, June and September — separate windows, not one continuous season.
December coincides with Mondego river floods.
Best weatherFair weatherToughest weather
What's on in Coimbra in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Festival
Christmas market and lights
25 Nov – 23 Dec · usuallyChristmas & New YearCrowdedWooden stalls of crafts, smoked sausage and sweets fill the Praça do Comércio in the Baixa, with lights strung along the shopping streets and concerts on weekends. Modest, but it brings the lower town to life in the evenings. Source ↗
- Hazard
Mondego river floods
15 Dec – 15 Mar · usuallyFlood seasonClosuresIn wet winters the Mondego tops its banks: the riverside cafes of Parque Verde and the grounds of Santa Clara-a-Velha go under, and in the worst storms low-lying Baixa streets and schools close. Source ↗
Nearby, and something's on
Within 300 km of Coimbra — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Coimbra?
Coimbra in December — FAQ
- Is December a good time to visit Coimbra?
- December in Coimbra: cool, rainy, with clean air — a good time to visit. It ranks #11 of 12 months for Coimbra on SeasonMap's comfort score (67/100).
- What is the weather like in Coimbra in December?
- In December, Coimbra averages a daily high of 15°C and a low of 7.1°C, with about 108.9 mm of rain over roughly 11.3 rainy days.
- What is the air quality in Coimbra in December?
- Coimbra has a mean US Air Quality Index of about 35 in December.
Within 300 km: Évora's Olive harvest around 1 Nov – 31 Jan, and Cascais' Cascais Christmas Village around 20 Nov – 5 Jan.