SeasonMapPiran weather in December
Slovenia
December in Piran: cold, rainy, with clean air — one of the weakest months to visit.
#11 of 12 months in Piran · #1174 of 1383 destinations to visit in December · comfort 49/100 (tier F)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Piran in December
No notes yet. Open Piran on the map to add the first one.
Piran climate normals — December
| Daytime high | 12°C / 53°F | 🧥 cold |
|---|---|---|
| Nighttime low | 8°C / 46°F | |
| Feels like (high) | 9°C / 48°F | |
| Sea temperature | 15°C / 59°F | 🥶 cold sea |
| Rainfall | 110 mm / 4.3 in | 🌧 rainy |
| Rainy days | 10 days | |
| Humidity | 77% | 💦 very humid |
| Dew point | 3°C / 38°F | |
| Sunshine | 5.3 h/day | |
| Daylight | 8.8 h | |
| Wind | 15 km/h / 9 mph | |
| Snowfall | 0.7 cm / 0.3 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 Piran 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.
Quietschool holidays in 7 of the markets that fill it, one of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Piran'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 weatherPiran's weather peaks June–August, best around July.
December coincides with Bura season.
Best weatherFair weatherToughest weather
What's on in Piran in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Hazard
Bura season
1 Nov – 31 Mar · usuallyWind seasonThe winter northeasterly comes down off the Karst in gusts that empty the seafront and stop the small boats. Cold, dry and clear with it, which makes for the best light of the year on the walls. Source ↗
Nearby, and something's on
Within 300 km of Piran — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Piran?
Piran in December — FAQ
- Is December a good time to visit Piran?
- December in Piran: cold, rainy, with clean air — one of the weakest months to visit. It ranks #11 of 12 months for Piran on SeasonMap's comfort score (49/100).
- What is the weather like in Piran in December?
- In December, Piran averages a daily high of 11.9°C and a low of 8°C, with about 110.1 mm of rain over roughly 9.9 rainy days.
- What is the air quality in Piran in December?
- Piran has a mean US Air Quality Index of about 42 in December.
Other months in Piran
Compare Piran in December
Warmer or cooler than Piran in December
Similar destinations in Central Europe — December
Within 300 km: Zagreb's Advent in Zagreb on 28 Nov – 7 Jan, and San Marino's Christmas of Wonders around 22 Nov – 6 Jan.