SeasonScore
Lisbon, Portugal
Photo: Alvesgaspar · CC BY-SA 3.0

Portugal

Lisbon in December

🧥 Winter

Cool and some showers.

🎒 Pack: warm jacket for evenings

Best months: May (9.6), Jun (9.6), Sep (9.6)

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Why December scores 9.0What goes into the score

How it works
🌡️ 15° / 9°C🌧️ 65 mm💧 dew pt 10°🍃 PM2.5 9
  • Weather comfort8.6
    • !Cool (15°C highs / 9°C lows)
    • ✓Comfortable humidity (dew point 10°C)
    • ✓Mostly dry (~65 mm rain)
  • Air quality9.4
    • ✓Good (within WHO guideline) (PM2.5 ~9 µg/m³)
  • Seasonal hazards10.0
    • ·No notable seasonal hazards
  • Safety baseline8.5
    • ·Normal precautions
Compare monthsPut December side by side with another month
DecMay
Score9.0 Excellent9.6 Excellent
Season🧥 Winter🌷 Spring
High / low15° / 9°22° / 14°
Rain65 mm27 mm
Humiditydew pt 10°dew pt 13°
PM2.59 µg/m³9 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast). Temperatures: Lisbon weather-station normals.

Holidays & crowdsDecember 2026

Long weekend

There's at least one long weekend. Domestic travel picks up and popular spots get busier over those days.

  • Christmas Day 25–27 Dec · 3 days off in a row

Other public holidays: Restoration of Independence Day (1 Dec) · Immaculate Conception (8 Dec)

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Explore LisbonEvents, sights, food & souvenirs

Check event dates locally

Portugal's hilly capital on the Tagus estuary, visited for its tiled streets, trams, viewpoints, fado music and seafood.

Events in December

No major events on our calendar for December.

Coming up later

Lisbon Book FairDate variesUsually late May to mid-June

A large outdoor book fair.

Why go: Evenings are lively.

Where: Parque Eduardo VII

Santo António (Festas de Lisboa)Every yearMain night 12-13 June every year; festivities run through June

Street parties with grilled sardines and the marchas populares parade.

Why go: The old districts are packed on 12 June night.

Where: Alfama, Mouraria and Avenida da Liberdade

NOS AliveDate variesUsually early to mid-July

A major music festival on the river west of Lisbon.

Why go: Accommodation fills early.

Where: Passeio Marítimo de Algés