What to pack for Porto in December
- long sleeves and a warm layer
- a medium jacket
- a compact umbrella or rain shell — rain is frequent
Humidity averages 81%; max daily wind around 23 km/h.
How December compares
Best months in Porto: May–September. See the full best time to visit Porto guide.
Porto in December: the details
In December, Porto sees average daytime highs of 15°C (58°F) and overnight lows of 9°C (48°F). Rainfall totals roughly 231 mm across 16.2 rainy days, and the sun shines about 6.1 hours per day with 9 hours of daylight mid-month. Relative humidity averages 81%.
In context: December is the 11th-warmest month and the wettest in Porto. The sunniest month is July (13.3 h/day).
| Metric | December average |
|---|---|
| Daytime high | 15°C / 58°F |
| Overnight low | 9°C / 48°F |
| Rainfall | 231 mm over 16.2 rainy days |
| Sunshine | 6.1 h/day (9 h daylight) |
| Humidity | 81% |
| Travel score | 5.4 / 10 |
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Porto, Portugal (41.15, -8.61) — see our methodology. Actual conditions vary year to year.
Not set on Porto? Browse the best places to visit in December ranked by travel score.
Frequently asked questions
How hot is Porto in December?
Daytime highs in Porto in December average 15°C (58°F); nights drop to about 9°C.
Does it rain in Porto in December?
Expect around 16.2 rainy days and 231 mm of rainfall in December.
Is December a good time to visit Porto?
December is a fair shoulder-season month in Porto — decent conditions with some trade-offs. Overall travel score: 5.4/10. The best months are May–September.
Also good in December, near Porto
Where should you go next month?
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