Temperature
Cool by day, brisk at night.
57°Ftypical December high
Typical range
December climate
December in Porto
Portugal · Europe
Cool days and some sun.
Some tradeoffs
Daytime high
57°F
Lows around 47°F
Rain
Several rainy days
Sun
6.5 h/day
Air feel
Very dry
Sea temp
59°F
Too cold for swimming
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days, with some sustained wet spells. About 13 wet days, the highest monthly average.
42%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
6.6 hDecember sunshine
Heat & humidity by month
Very dryDecember Heat feel
Easy airWarm airHot airHumid air
Hourly temperature pattern
In December, afternoons feel about 52° and nights feel near 43°.
Very coldColdCoolComfortableWarmNight hours
Clear sky
Mostly cloudy skies this month.
37%December Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in December.
8 mphDecember Light breeze
Sea temperature
59°FDecember sea temp
More detailIncludes daypart comfort
Typical December day
December late afternoons are around 55°F, easing to about 53°F in early evening.
Avg temp Typical range
Morning51°F
Rain27%
Cloud66%
Humid airLow
Sun intensityMinimal
Midday55°F
Rain28%
Cloud59%
Humid airLow
Sun intensityLow
Late afternoon56°F
Rain27%
Cloud59%
Humid airLow
Sun intensityMinimal
Early evening53°F
Rain26%
Cloud58%
Humid airLow
Sun intensityMinimal
Best windowData tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 56 | 46 | 6.2 | 13 | 6.8 | 84 | 57 |
| Feb | 58 | 46 | 4.1 | 10 | 8.3 | 79 | 57 |
| Mar | 62 | 49 | 5.2 | 12 | 9.5 | 76 | 57 |
| Apr | 65 | 52 | 5.0 | 12 | 11.0 | 76 | 58 |
| May | 69 | 56 | 3.5 | 11 | 12.1 | 76 | 60 |
| Jun | 74 | 61 | 1.8 | 7 | 13.5 | 76 | 63 |
| Jul | 78 | 64 | 0.9 | 4 | 13.6 | 74 | 66 |
| Aug | 79 | 64 | 0.9 | 4 | 12.4 | 74 | 67 |
| Sep | 76 | 62 | 2.6 | 7 | 10.9 | 75 | 67 |
| Oct | 69 | 58 | 7.0 | 13 | 8.6 | 80 | 65 |
| Nov | 61 | 51 | 6.5 | 13 | 7.1 | 83 | 61 |
| Dec | 57 | 47 | 6.7 | 13 | 6.6 | 84 | 59 |
Similar climates
Similar
Similar travel styleBarcelonaSpainSimilar travel styleLisbonPortugalSimilar travel styleCataniaItalySimilar travel styleIstanbulTurkey
Want a side-by-side climate view? Compare Porto with Barcelona.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology