Verdict: Good month
Porto Weather in December
December is mild-to-cool in Porto, topping out near 15°C (59°F) — comfortable with a layer on. It's also the wet side of the calendar: rain falls on about 16 days, so build flexibility into plans. Overall, December is a solid month to visit Porto.
Average high
15°C / 59°F
Average low
9°C / 48°F
Rain days
~16
Precipitation
209 mm
What to pack for Porto in December
- Layers — t-shirts under a light jacket or sweater
- Rain gear is non-negotiable — expect rain on roughly 16 days
- Comfortable walking shoes — every guide on this site assumes you'll use them
December against the rest of the year
Warmest in Porto: Jul (24°C / 75°F) · Coolest: Jan (14°C / 57°F) · Wettest: Oct (~16 rain days)
14°
7°
Jan
16°
9°
Feb
16°
9°
Mar
18°
11°
Apr
20°
13°
May
22°
15°
Jun
24°
16°
Jul
24°
16°
Aug
23°
16°
Sep
21°
14°
Oct
17°
11°
Nov
15°
9°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)