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Climate · Porto

Porto in December

Cool and damp, as the days hold steady.

Typical weather, averaged over 30 years

December in Porto is cool: highs near 60°F, lows near 46°F. Rain falls on about three days a week, more often as the month goes on, and daylight holds at about 9 hours 15 minutes.December in Porto is cool: highs near 16°C, lows near 8°C. Rain falls on about three days a week, more often as the month goes on, and daylight holds at about 9 hours 15 minutes.

High
60°F16°Caverage
Low
46°F8°Caverage
Wet days
3a week · 42% of days
Daylight
9h 15mon average

Is December a good time to visit Porto?

December sits outside Porto's best months, which run from June to September. Expect cool days and rain on about three days a week.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How December sits in the year

week by week

Temperature

Highs near 60°F in December, against 58°F to 82°F through the year.Highs near 16°C in December, against 14°C to 28°C through the year.

Chance of a wet day

42% of days in December, against 13% to 45% through the year.

Cloud cover

62% cover in December, against 25% to 62% through the year.

Daylight

9h 15m in December, against 9h 15m to 15h 05m through the year.

Week by week, lightly smoothed, with December shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. November65°18°low 51°low 11°3 wet days a weekRain on about three days a week.
  2. December60°16°low 46°low 8°3 wet days a weekRain on about three days a week.
  3. January58°14°low 44°low 7°3 wet days a weekRain on about three days a week.

Where Porto sits, in December

Europe/Lisbon
this place
typical high in December 40°F4°C95°F35°C
Sunrise, mid-December
7:52 AMsets 5:07 PM
Above the sea
90 mlow-lying
Latitude
41.2°Nnorthern hemisphere
Nearest of ours
Valença do Douro88 km east

The land around Porto, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Portugal in December

high · low · wet days
See December on the planning mapThe whole year in Porto

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Porto. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.