December 13 sees frequent showers in Porto. Historical data shows a 40% chance of rain, so pack accordingly. Temperatures average 14°C. You'll find plenty of company in Porto this month as tourism activity remains quite robust.
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Essential Travel Info for Porto
Currency
EUR
€ Euro
Language
Portuguese
Driving
Right side
Connect
Porto has 4G from all Portuguese carrier...
Safety
Very High Safety
GPI: 1.301
Porto Weather Forecast for December 13
"Mild & Comfortable. Expect average highs of 13.9°C. 40% chance of rain."
What to Wear in Porto in December
Based on historical data for December 13, Porto typically experiences temperatures between 8°C and 13.9°C. We recommend packing light jacket, long pants, umbrella to stay comfortable. With a 40% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Porto
Smart Suitcase
- Light Jacket
- Long Pants
- Umbrella
Average High
13.9°C
Daytime Peak
Average Low
8°C
Nighttime Low
Feels Like
13.5°C
🌤️ Feels accurate
Rain Chance
40%
Avg 5.2mm if it rains
Cloud Cover
58%
Overcast
Pressure
1019.5 hPa
High volatility
Porto Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 88% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
10.9°C
Pleasant
Heat Stress
Low
No heat warning
😐 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
❄️ Cold Water Hazard
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Portugal
Flight Traffic
Busy
68/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~165
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Porto
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
07:52
☀️ Noon
12:30
🌇 Sunset
17:07
⏱️ Daylight
9h 14m
Wind Speed
20.4 km/h
Moderate wind
Sunshine
5.8 hrs
Direct Sun (Cloud-free)
Humidity
82%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Porto
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Porto
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Rapid pressure changes detected. High risk for meteosensitive people.
Weather unlikely to affect joint pain.
Fish are active due to pressure changes.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Porto on December 13 averages 13.9°C with a 40% precipitation probability. Wedding/Outdoor Event Score: 83/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Porto Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (December 13) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Porto Worth Visiting on December 13?
Planning a trip to Porto on December 13? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 13.9°C with a 40% historical precipitation risk.
✈️ Travel Logistics: Approximately 165 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 6 vaccinations are recommended for Portugal, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 14.9°C (polar plunge). Wave conditions are generally surfers only with heights around 2.55m.
📊 Historical Extremes: The hottest December 13 recorded in the last 30 years saw temperatures hit 17.1°C in 2025, while the coldest dropped to 6.4°C in 2024.