Early winter · Weather & things to do
Piran in December
Piran cools off: highs slip to 48°F (9°C), from 56°F in November, with lows of 39°F (4°C) and about 3.8 in (96 mm) of rain.
With a comfort score of 52/100 (11th of 12), it's one of the toughest months, held back mainly by cloud cover.
- Avg high
- 48°F (9°C)
- Avg low
- 39°F (4°C)
- Rain
- 3.8 in (96 mm)
- Humidity
- 82%
- Cloud cover
- 74%
- Daylight
- ~8 h 32 min
- Comfort score
- 52/100 · Fair
What December feels like
It's cool, with highs near 48°F (9°C), so a proper jacket stays on most of the day.
After dark, temperatures fall to about 39°F (4°C).
Some rain is likely, about 3.8 in (96 mm) in the month, so pack for a shower or two.
Daylight is short, roughly 8 h 32 min mid-month, so start sightseeing early.
Plan around December
December is one of the lower-scoring months here; the best are April – September.
- Shortest days of the year, about 8 h 32 min of daylight.
- Comfort slips from 62/100 in November to 52/100.
- Our Slovenia’s Alpine Lakes route recommends May – Sep, so December falls outside its suggested window.
What to pack for December
- Insulated jackethighs only 48°F
- Packable rain jacket or umbrellaabout 3.8 in of rain
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Piran in December
Weather can go either way, so the picks below mix open-air spots with indoor backups.
Tartini Square
Oval square on a filled-in harbor, named for violinist Giuseppe Tartini.
Piran Town Walls
Medieval walls above town with views over terracotta roofs and the sea.
Fritolin pri Cantini
Self-service seafood spot on Tartini Square for fried squid and sardines.
Punta Lighthouse Promenade
Rocky swimming spots and ladders around Piran's point.
Sečovlje Salina Nature Park
Working salt pans and wetland near Piran, with saltworks still harvested by hand.
Nearby in December
- Ljubljana in December~58 mi · highs 42°F, 3.3 in rain · 4°C (7°F) cooler by day, about as wet
- Lake Bled in December~64 mi · highs 39°F, 2.6 in rain or snow · 5°C (9°F) cooler by day, drier
- Cortina d'Ampezzo in December~98 mi · highs 35°F, 2.2 in rain or snow · 8°C (14°F) cooler by day, drier
- Val Gardena in December~116 mi · highs 35°F, 2.2 in rain or snow · 8°C (14°F) cooler by day, drier
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~256 m to Piran's ~3 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Piran in December: quick answers
Is December a good time to visit Piran?
It's one of the tougher months here, scoring 52/100, held back mainly by cloud cover. The best months are April – September. Expect highs of 48°F (9°C) and 3.8 in (96 mm) of rain. Our Slovenia’s Alpine Lakes route recommends May – Sep, so December is outside its suggested window.
How cold is Piran in December?
Average highs are 48°F (9°C) and average lows 39°F (4°C), making it the 3rd-coldest month by daytime highs.
Does it rain a lot in Piran in December?
Some: about 3.8 in (96 mm) of rain falls across December on average, the 4th-wettest month of the year. The annual total is about 40.4 in (1027 mm).
What should I pack for Piran in December?
Bring insulated jacket (highs only 48°F), packable rain jacket or umbrella (about 3.8 in of rain) and comfortable walking shoes (most places below are best reached on foot or with short walks).
Planning Piran in December?
Share this December plan with your group, poll everyone on dates and keep the packing list in one place.