Early winter · Weather & things to do
San Sebastián in December
San Sebastián cools off: highs slip to 54°F (12°C), from 59°F in November, with lows of 48°F (9°C) and about 4.6 in (117 mm) of rain.
With a comfort score of 58/100 (11th of 12), it's one of the toughest months, held back mainly by cloud cover.
- Avg high
- 54°F (12°C)
- Avg low
- 48°F (9°C)
- Rain
- 4.6 in (117 mm)
- Humidity
- 82%
- Cloud cover
- 77%
- Daylight
- ~8 h 48 min
- Comfort score
- 58/100 · Fair
What December feels like
Afternoons only reach about 54°F (12°C), so plan on a warm jacket.
Lows average 48°F (9°C).
Some rain is likely, about 4.6 in (117 mm) in the month, so pack for a shower or two.
Expect plenty of overcast days, with cloud cover near 77%.
Only about 8 h 48 min of daylight means early sunsets.
Plan around December
December is one of the lower-scoring months here; the best are May – October.
- Inside the wettest three-month stretch, November – January.
- Shortest days of the year, about 8 h 48 min of daylight.
- Comfort slips from 62/100 in November to 58/100.
- Our Basque Coast Food Trail route recommends May – Oct, so December falls outside its suggested window.
What to pack for December
- Insulated jackethighs only 54°F
- Packable rain jacket or umbrellaa shower or two is likely
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in San Sebastián in December
Weather can go either way, so the picks below mix open-air spots with indoor backups.
Ganbara
Pintxos bar known for wild mushrooms in season and crab tartlets.
Why now A warm sit-down stop when highs sit around 54°F.
Bar Nestor
Tiny bar known for its tortilla, made only twice a day, and steaks.
Why now Somewhere to warm up between colder walks.
La Concha Beach
Shell-shaped city beach with a long promenade and calm water.
Monte Igueldo
Funicular since 1912 up to a viewpoint and old-fashioned amusement park.
Monte Urgull
Wooded hill over the old town with a castle, a statue of Christ and bay views.
Nearby in December
- Bilbao in December~48 mi · highs 56°F, 4.7 in rain · similar daytime temperatures, about as wet
- Laguardia in December~61 mi · highs 49°F, 2.2 in rain · 3°C (5°F) cooler by day, drier
- Barcelona in December~250 mi · highs 57°F, 1.2 in rain · 2°C (3°F) warmer by day, drier
- Girona in December~261 mi · highs 56°F, 1.7 in rain · similar daytime temperatures, drier
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
San Sebastián in December: quick answers
Is December a good time to visit San Sebastián?
It's one of the tougher months here, scoring 58/100, held back mainly by cloud cover. The best months are May – October. Expect highs of 54°F (12°C) and 4.6 in (117 mm) of rain. Our Basque Coast Food Trail route recommends May – Oct, so December is outside its suggested window.
How cold is San Sebastián in December?
Average highs are 54°F (12°C) and average lows 48°F (9°C), making it the 3rd-coldest month by daytime highs.
Does it rain a lot in San Sebastián in December?
Some: about 4.6 in (117 mm) of rain falls across December on average, the 3rd-wettest month of the year. The annual total is about 42.1 in (1070 mm).
What should I pack for San Sebastián in December?
Bring insulated jacket (highs only 54°F), packable rain jacket or umbrella (a shower or two is likely) and comfortable walking shoes (most places below are best reached on foot or with short walks).
More on San Sebastián
Planning San Sebastián in December?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.