Porto in December
In December, Porto averages 14°C (57°F) during the day and 9°C (48°F) at night, with frequent rain — about 14 days of the month see precipitation (165 mm total).
ShoulderConditions are cool — bring a jacket for evenings. Plan for unsettled weather and bring rain gear.
December is one of the wetter and less comfortable months in Porto. If your dates are flexible, consider a different time of year.
How December compares to the rest of the year in Porto
December is one of the coolest months in Porto (12th of 12) and one of the wettest months (3rd of 12). Daytime temperature runs 6°C below the annual average (20°C). December runs 3°C cooler than November (17°C) and stays flat into January.
December sunrise & sunset in Porto
Times shown for Porto local time (Europe/Lisbon), calculated for the 15th of December. They shift by a few minutes day to day across the month.
Photography light in Porto — December
Golden-hour and blue-hour windows for the 15th of December, in Porto's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Porto in December
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on December's tier (Shoulder) and Porto's popularity.
Crowds & pricing — December in Porto
Porto is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Why this tier: Christmas / New Year travel surge
Sun & mosquito risk — December in Porto
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Porto in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 14°C / 57°F | 8°C / 46°F | 130 mm | 14 | 0 |
| February | 15°C / 59°F | 8°C / 46°F | 105 mm | 13 | 0 |
| March | 17°C / 63°F | 9°C / 48°F | 85 mm | 12 | 0 |
| April | 18°C / 64°F | 11°C / 52°F | 90 mm | 13 | 0 |
| May | 20°C / 68°F | 13°C / 55°F | 75 mm | 12 | 0 |
| June | 24°C / 75°F | 15°C / 59°F | 35 mm | 8 | 0 |
| July | 26°C / 79°F | 17°C / 63°F | 20 mm | 4 | 0 |
| August | 26°C / 79°F | 17°C / 63°F | 20 mm | 4 | 0 |
| September | 25°C / 77°F | 16°C / 61°F | 65 mm | 8 | 0 |
| October | 21°C / 70°F | 14°C / 57°F | 130 mm | 13 | 0 |
| November | 17°C / 63°F | 11°C / 52°F | 145 mm | 14 | 0 |
| December | 14°C / 57°F | 9°C / 48°F | 165 mm | 14 | 0 |
Other cities with similar December weather
🌍 See the full ranked list of climate twins for Porto in December →
Frequently asked questions
How hot is Porto in December?
In December, Porto averages a high of 14°C (57°F) and a low of 9°C (48°F) — generally cool.
Does it rain a lot in Porto in December?
December can be fairly wet in Porto, with about 14 rainy days on average.
Is December a good time to visit Porto?
December is cool but on the rainy side. It suits travelers who are comfortable with cool weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Porto in December?
Pack a warm jacket and layers, plus a compact umbrella or rain jacket. See the full December packing list for Porto for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.