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Guimarães Weather in December
With daytime temperatures of 14°C (57°F) and nighttime lows of 6°C (43°F), December in Guimarães brings moderate temperatures during the day. It is also the wettest month of the year, so pack an umbrella.
Rainfall in Guimarães in December
Guimarães is in the rainy season in December, with rain on around 16 days and an average of 218 mm (8.6 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.
Temperature in Guimarães in December
Daytime highs in Guimarães in December reach 14°C (57°F), with nights around 6°C (43°F). December is part of winter. Conditions are often most pleasant around the middle of the day. With lows around 6°C (43°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Guimarães in December
The area enjoys a balanced 124 hours of sunlight, ensuring it's neither too rainy nor too sunny.December in Guimarães has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Guimarães Temperature in December
Min Temperature
6°C (43°F)
Max Temperature
14°C (57°F)
Chance of Rain
54%
Precipitation
218 mm (8.6 in)
Rainy days
16 days
Humidity
81% *
Sunshine
124 hours *
Percentage Sunshine
46% *
* Data from: Porto, Portugal (39 KM, 24 Miles).
Guimarães Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Guimarães - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Guimarães typically stay consistent throughout December, with daily highs averaging around 14°C (57°F). Nights are cold, with lows around 7°C (45°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather records for Guimarães in December
Browse day-by-day weather records for Guimarães spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Guimarães historical weather extremes in December
The extremes listed below come from historical weather data collected in Guimarães from 1976 through 2025.
- On December 2, 1985, temperatures climbed to 24°C (75°F), marking the warmest December day on record.
- On December 20, 2009, Guimarães saw its coldest December day with temperatures maxing out at 7°C (45°F).
- Nighttime temperatures dropped to -2°C (28°F) on December 17, 2010, marking the coldest December night on record.
- The wettest December day on record brought 73 mm (2.9 in) of precipitation to Guimarães (December 14, 2012).
Best Places in Portugal in December
Find out more about the weather in Portugal and which places have the best travel conditions in this month. See all of Portugal in December →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Guimarães in December
Pack for changing conditions in Guimarães in December. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in Guimarães in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming5/10 -
Cycling5/10 -
Walking5/10 -
Camping3/10
Guimarães 3-Day Forecast
More climate data for Guimarães
Temperature Rainfall Sunshine Humidity
See the full Guimarães climate overview or explore weather in Portugal.
Popular in December
Where to go in December - average daytime high across popular destinations.
Portimão
17°C (63°F) Albufeira17°C (63°F) Lagos17°C (63°F) Ericeira16°C (61°F) Cascais17°C (63°F) Vilamoura17°C (63°F) Lisbon16°C (61°F) Porto
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