San Marino weather in December

December in San Marino: cold, a little rain, with clean air — a fair time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

San Marino San Marino · Central & Southern Italy · City58
  1. 55Jan
  2. 62Feb
  3. 69Mar
  4. 78Apr
  5. 82May
  6. 95Jun
  7. 88Jul
  8. 89Aug
  9. 87Sep
  10. 77Oct
  11. 64Nov
  12. 58Dec

#11 of 12 months in San Marino · #1020 of 1413 destinations to visit in December · comfort 58/100 (tier D)

Days
8°C
Nights
1°C
Wet days
10
Sun
5.9 h
Humidity
85%
Daylight
9 h
San Marino, San Marino
Photo: Deividas Vasinas · Pexels

Traveller notes on San Marino in December

Notes from nearby Rimini (17 km away)

San Marino doesn't have its own notes for December yet — these are about Rimini, close enough to share the season.

Forum posters are direct that December in Rimini won't offer sunbathing weather, but describe clear blue-sky days as genuinely possible and ideal for a beach walk despite the cold. Posters note that Italy's coastal areas generally run milder in December than inland regions, a pattern that applies to Rimini's Adriatic coast. Posters describe December as a favorite time for some visitors precisely because the summer crowds have cleared out, with the historic city center's art and architecture offering a real draw beyond the beach itself. Posters do warn that nightlife thins out considerably outside weekends, with many clubs largely dead midweek. Posters generally recommend preparing for genuinely cold conditions and even possible snow, rating December as a quiet, art-and-culture-focused alternative to Rimini's summer beach-resort identity.
Tripadvisor community · December · 1 month ago · about Rimini · Read more on Tripadvisor ↗

Other months in San Marino

August is the most expensive month in this corner of Italy and the hottest, with locals leaving town as visitors arrive - the forum's own reference point is July and August days over 40C elsewhere in the country. San Marino's particular rhythm is the day trip: it is very touristy through the day, the car parks fill, and it becomes delightful in the evening once the coaches have gone. Which is the whole of the advice - stay the night, or come late. From Rimini it is about an hour. Our row is milder than the region's worst at 26.4C, because the republic sits up on Monte Titano. The record: 16.6C nights, 7.3 precipitation days carrying 55.1mm and 12 hours of sun.
DelightfulOnceTheCoachesGo · August · 1 month ago · Read more on Tripadvisor ↗
San Marino forum threads describe January as genuinely cold, in line with the wider northern Italian winter, and posters were quick to point out that the historic center sits high up on Mount Titano - meaning it runs noticeably colder and windier than towns down on the Romagna coast below. Despite the chill, the old town stays lively through the season with Christmas markets and an outdoor ice rink running into early January, so there's real reason to visit even in the coldest stretch. The consistent advice: dress for real mountain-town winter, not coastal Italy, with a proper coat and warm layers for walking the exposed hilltop streets.
MonteTitanoRegular · January · 1 month ago · Read more on Tripadvisor ↗
Forum threads covering the San Marino/Rimini area describe July as genuinely variable year to year - some summers run hot and dry with nights staying close to 30C, others turn noticeably cooler and rainier. Typical daytime highs stay just under 30C with nights in the low-20s during late July, but posters were clear that strong, short, localized storm fronts can move through even on what started as a beautiful sunny morning. The consistent read: expect real summer heat as the baseline, but keep flexible plans since an afternoon or evening storm is a genuine possibility even in peak season.
EmiliaRomagnaHilltopRegular · July · 1 month ago · Read more on Tripadvisor ↗
Detailed month-specific trip reports for San Marino itself are limited on the forum, with most discussion folding it into broader Emilia-Romagna coast planning around nearby Rimini. Posters do flag that San Marino's hilltop perch on Monte Titano gives it a noticeably different climate from the beach towns below - cooler and windier, especially compared to the intense heat that sends locals fleeing the coast come August. Posters generally recommend checking a dedicated regional forecast rather than relying on generic country-level weather for a day trip up the mountain. Given the elevation effect, June here should run comfortably warm by day with cooler evenings, ahead of the fuller summer heat further down toward the coast.
Tripadvisor community · June · 1 month ago · Read more on Tripadvisor ↗

Add your own note from San Marino's card on the map.

San Marino climate normals — December

Daytime high8°C / 46°F🧥 cold
Nighttime low1°C / 33°F
Feels like (high)5°C / 41°F
Sea temperature11°C / 51°F🥶 cold sea
Rainfall68 mm / 2.7 in🌦 some rain
Rainy days10 days
Humidity85%💦 very humid
Dew point2°C / 35°F
Sunshine5.9 h/day
Daylight9 h
Wind15 km/h / 9 mph
Snowfall0.6 cm / 0.2 in
Air quality (US AQI)42🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in San Marino in December

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

BusyChristmas of Wonders, school holidays in 7 of the markets that fill it(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for San Marino's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Toughest weatherSan Marino's weather peaks June–August.

JFMAMJJASOND

Best weatherFair weatherToughest weather

What's on in San Marino in December

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Season

    In-cloud days on Monte Titano

    15 Oct – 15 Apr · usuallyFog seasonRisk

    The old town sits high enough that the cloud base often sits below it. On those days the famous view of the Adriatic is a white wall, while the coast below is clear.

  • Festival

    Christmas of Wonders

    22 Nov – 6 Jan · usuallyChristmas & New YearCrowded

    The whole walled town becomes a Christmas market from the last Saturday of November to Epiphany, with a rink in the Cava dei Balestrieri. Weekends bring the coaches back and the cable car queues. Source ↗

What's on around the world in December →

Nearby, and something's on

Within 300 km of San Marino — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is San Marino?

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San Marino in December — FAQ

Is December a good time to visit San Marino?
December in San Marino: cold, a little rain, with clean air — a fair time to visit. It ranks #11 of 12 months for San Marino on SeasonMap's comfort score (58/100).
What is the weather like in San Marino in December?
In December, San Marino averages a daily high of 7.9°C and a low of 0.8°C, with about 68 mm of rain over roughly 9.6 rainy days.
What is the air quality in San Marino in December?
San Marino has a mean US Air Quality Index of about 42 in December.

Within 300 km: Florence's Olive harvest and new oil around 25 Oct – 10 Dec, and Bologna's Christmas markets on 25 Nov – 6 Jan.