Portugal Porto Weather in December — Climate Guide
December in Porto is moderate
December is moderate for Porto.
Christmas + NYE festive. Avenue dos Aliados decorations + Douro River fireworks magical.
Travel score
Porto December Weather Stats
Avg High
14°C
Avg Low
7°C
Rainy Days
13
150mm total
Sunshine
4h
Daily avg
Humidity
80%
high
UV Index
2
Low
Wind
12 km/h
Gusts 28
Sea Temp
15°C
no swimming
Crowds
Moderate
At attractions
December Sunrise & Sunset
Air Quality
PM2.5
16 μg/m³
PM10
28 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
12°C
Nighttime
5°C
Humidity and wind affect how the actual temperature feels.
Wind
12 km/h
Max gust 28 km/h
Activities Recommended for December
December Travel Pros & Cons
Pros
- Christmas markets festive
- NYE fireworks over Douro
- Cellars cozy
- Indoor focus easy
Cons
- 150mm rain
- Cool 7-14°C
- Daylight 9.5h
December Events & Festivals
- Christmas markets at Aliados
- New Year fireworks over Douro
Porto in December — Full Picture
Christmas + NYE festive. Avenue dos Aliados decorations + Douro River fireworks magical.
What to Wear & What to Pack
Cool wet. Warm coat + waterproof.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
18.3°C
9.3°C
10.3/mo
Summer (Jun·Jul·Aug)
24.7°C
14.3°C
4/mo
Autumn (Sep·Oct·Nov)
20.7°C
11.7°C
9.7/mo
Winter (Dec·Jan·Feb)
Current14.3°C
6.3°C
12.7/mo
Porto Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 14° | 6° | 13d·150mm | 4h | 80% | 2 | Quiet | Low season | |
| 15° | 6° | 12d·110mm | 5h | 78% | 3 | Quiet | Low season | |
| 17° | 8° | 11d·90mm | 6h | 75% | 5 | Moderate | Shoulder | |
| April (Best) | 18° | 9° | 11d·90mm | 7h | 73% | 6 | Busy | Peak |
| May (Best) | 20° | 11° | 9d·80mm | 8h | 70% | 7 | Busy | Peak |
| June (Best) | 23° | 13° | 6d·40mm | 9h | 70% | 8 | Very busy | Peak |
| July (Best) | 25° | 15° | 3d·20mm | 10h | 70% | 9 | Very busy | Peak |
| August (Best) | 26° | 15° | 3d·25mm | 9h | 70% | 9 | Very busy | Peak |
| September (Best) | 24° | 14° | 6d·60mm | 8h | 73% | 7 | Very busy | Peak |
| 21° | 12° | 11d·100mm | 6h | 78% | 5 | Moderate | Shoulder | |
| 17° | 9° | 12d·130mm | 4h | 80% | 3 | Quiet | Low season | |
| 14° | 7° | 13d·150mm | 4h | 80% | 2 | Moderate | Shoulder |
View Other Months
Porto December Hotel Picks
Frequently Asked Questions
Is December a good time to visit Porto?
Porto in December is moderate. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in Porto in December?
Porto December averages a high of 14°C and a low of 7°C.
Does it rain much in Porto in December?
Porto December averages 150mm of rainfall over about 13 rainy days.
What should I wear in Porto in December?
Cool wet. Warm coat + waterproof.
What time are sunrise and sunset in Porto in December?
Porto December sunrise is 07:50 and sunset is 17:15, with 9h 25min of daylight.
What's the air quality like in Porto in December?
Porto December air quality (AQI) averages 45, rated Good. PM2.5 averages 16μg/m³.
What activities are recommended in Porto in December?
In December, Porto is great for Christmas markets Aliados, Cellars, NYE Douro fireworks.
Is December peak season in Porto?
Porto December crowds are moderate and prices are shoulder. You can travel relatively comfortably without long queues.
Best Months to Visit Porto
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.