Early December 1 December
46°F
Typical afternoon high
31% historical wet-day frequency
Slovenia · Mountains
Ljubljana, Lake Bled & western Slovenia
in December.
Is December a good time?
Cool days.
More overnight stays than November.
December averages 46°F afternoons and 57°F seas, with about 8 rain days.
- Afternoons
- 46°F
- Sea
- 57°F
- Visitor demand
- 21%of August peak
Historical Zahodna Slovenija regional averages, not a forecast or a measure of queues. Overnight demand compares average stays per day. Covers Ljubljana, Lake Bled, Piran and Julian Alps; conditions vary within the region.
Overall match
6.8/10 · scores & prioritiesThis weather score measures sightseeing comfort. Snow and ski conditions need a separate check.
What matters most?
Weather 50% · Crowds 30% · Cost 20%
#8 of 12 months here · Balanced mix
Weather4.9/10Fair
CrowdsLow seasonvs its own year; overnight stays do not measure queuesFor its size, busier than most of Europe this month
CostModeratefor Europe; Slovenia-wide price level
Overall combines weather, overnight demand and cost. It does not include sea temperature.
Plan your December
What to expect.
What should I pack?
Afternoons around 46°F (8°C): a warm coat; nights around 31°F (0°C): a winter coat, hat and gloves. About 9 hours of daylight. About 8 rain days in a typical December.
Can I swim in December?
The sea averages 57°F. Our swimming guide: very cold: wetsuit weather. Your comfort will vary. This is open water near the coast, not a beach-specific reading.
Monthly coastal averages from NOAA, 2011–2025. Sea temperature is separate from the weather and Overall scores.
A typical day: temperatures & daylightAfternoons, nights, sea temperature & daylight Show detailsHide details
About 9 hours of daylight.
The sun rises about 07:39 and sets about 16:19 (local time, mid-month). Mornings start around 31°F (0°C); afternoons reach about 46°F (8°C). Expect rain on about 8 days in a typical December.
Typical afternoon
46°F (8°C)
average daily high, 15 recent Decembers
Night low
31°F (0°C)
average daily minimum
Sea
57°F (14°C)
very cold; open water near the coast, NOAA satellite record 2011–2025
Daylight
8h 40m
on the 15th, computed from latitude
Early, middle or late?
Early or late December?
Early and late December have similar afternoon averages. The afternoon high averages 46°F on the 1st, versus 46°F on the 31st. Historical wet-day frequency falls from 31% to 23% between those dates.
Mid December 15 December
46°F
Typical afternoon high
22% historical wet-day frequency
Late December 31 December
46°F
Typical afternoon high
23% historical wet-day frequency
Historical daily averages from 2011–2025, smoothed over two weeks. A seasonal pattern, not a forecast. This does not establish which week has the lowest prices or fewest visitors.
Public holidays · 2026: 25 Dec Christmas Day; 26 Dec Independence and Unity Day.
Daily calendar & holiday datesDecember 2026 · historical weather & dated holidays Show calendarHide calendar
December 2026 calendar
Weather shows historical patterns, not a forecast. Holidays and events use the dates shown for 2026.
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
| 146° | 246° | 345° | 445° | 545° | 645° | |
| 745° | 845° | 945° | 1045° | 1146° | 1246° | 1346° |
| 1446° | 1546° | 1646° | 1746° | 1846° | 1946° | 2047° |
| 2147° | 2247° | 2347° | 2446° | 2546° | 2646° | 2746° |
| 2846° | 2946° | 3046° | 3146° |
Afternoon high rain likely (25%+) local school holidays public holiday event
Afternoons hold at about 46°F (8°C) all month. The chance of a wet day runs 16–32%.
School-holiday dates for December 2026 aren't available in our data yet. A day without a school marker doesn't mean schools are open. Public holidays: 25 Dec Christmas Day; 26 Dec Independence and Unity Day. Elsewhere in December 2026, the share of people living where schools are out on a typical day: France 39%, Germany 29%, Italy 35%, Spain 32%. (School holidays: OpenHolidays, ODbL.)
Crowds and cost
Visitor season
Will it be busy?
Low season. December averages 21% of August's overnight stays per day. More overnight stays than November.
Overnight stays across Zahodna Slovenija do not measure queues, day visitors or congestion at individual sights. For its size, busier than most of Europe this month.
Hotel price season
Will it be cheaper?
A little below usual. Estimated from national hotel prices and local visitor demand; no measured regional room rate is available.
Fewer overnight stays do not automatically mean cheaper rooms. Check actual quotes for your trip.
Slovenia as a whole
Below EU average
2024 restaurants and hotels price level: 90 where the EU average is 100. A relative index, not a room rate.
Year-to-year variation
How much does December vary?
Across the recorded years
In the 15 years from 2011 to 2025, the month's afternoons averaged between 42°F (6°C) and 49°F (9°C); in 12 of them they were within 3°F (1.5°C) of the typical 46°F (8°C). Rain days ranged from 0 to 14; half the years had 4–9.
Rain days in each December
Rain days
8
at least 1 mm, typical year; about 12 in a wet year
Mostly sunny days
5 of 31
cloud cover under 30%
Years with a 95°F+ day
0 of 15
no December in the last 15 years had a day at or above 95°F (35°C)
Good weather days
7 of 31
rated very good or better
See every recorded DecemberHistorical monthly averages, year by year Show detailsHide details
| Year | Afternoon high | Rain days |
|---|---|---|
| 2011 | 46°F | 9 |
| 2012 | 42°F | 7 |
| 2013 | 47°F | 4 |
| 2014 | 45°F | 9 |
| 2015 | 49°F | 0 |
| 2016 | 45°F | 0 |
| 2017 | 44°F | 12 |
| 2018 | 46°F | 4 |
| 2019 | 48°F | 9 |
| 2020 | 44°F | 14 |
| 2021 | 44°F | 8 |
| 2022 | 45°F | 12 |
| 2023 | 49°F | 8 |
| 2024 | 45°F | 6 |
| 2025 | 47°F | 4 |
Checked against official climate averages for Ljubljana Bezigrad. How we check
Compare dates
November, December
or January?
| Typical conditions | Nov | Dec | Jan |
|---|---|---|---|
| Afternoons | 52°F | 46°F | 44°F |
| Sea | 62°F | 57°F | 52°F |
| Rain days | 11 | 8 | 8 |
| Overnight demand | 17% | 21% | 17% |
November: Warmer afternoons, warmer sea and more rain days than December. Less overnight demand. November guide →
January: Cooler sea than December. Less overnight demand. January guide →
Overnight demand measures accommodation stays, not queues. Sea temperatures are monthly coastal averages.
Compare any of the 12 monthsChoose another month and compare it with December Show comparisonHide comparison
Yellow marks the top three months on the Balanced mix. December stays as your reference.
March has a Weather score at least 1.0 point higher than December, without a substantially busier visitor season.
Your comparison
December or November?
Overnight stays are 17% of the busiest month.
National hotel prices and local visitor demand suggest a little below usual. No measured regional room rate is available.
Read the November guide →| Typical conditions | December | November |
|---|---|---|
| Afternoons | 46°F | 52°F |
| Nights | 31°F | 39°F |
| Sea | 57°F | 62°F |
| Rain days | 8 | 11 |
| Visitor season | Low season | Low season |
| Overall / 10 | 6.8 | 7.1 |
| Month rank | #8 | #7 |
Every month, in detail Show detailsHide details
| Month | Overall | Rank | High | Low | Sea | Rain days | Weather | Visitor season |
|---|---|---|---|---|---|---|---|---|
| January | 6.8 | #9 | 44°F | 30°F | 52°F | 8 | 4.8 | Low season |
| February | 6.8 | #10 | 47°F | 31°F | 50°F | 7 | 4.8 | Low season |
| March | 7.5 | #6 | 56°F | 36°F | 51°F | 8 | 6.1 | Low season |
| April | 7.9 | #1 | 64°F | 43°F | 56°F | 8 | 7.5 | Low season |
| May | 7.8 | #2 | 70°F | 50°F | 64°F | 12 | 8.0 | Moderate season |
| June | 7.7 | #3 | 79°F | 59°F | 73°F | 10 | 8.5 | Moderate season |
| July | 6.5 | #11 | 83°F | 61°F | 78°F | 11 | 7.8 | Peak season |
| August | 6.3 | #12 | 83°F | 60°F | 78°F | 9 | 7.9 | Peak season |
| September | 7.7 | #4 | 73°F | 54°F | 73°F | 10 | 8.3 | Moderate season |
| October | 7.7 | #5 | 63°F | 46°F | 67°F | 9 | 7.2 | Low season |
| November | 7.1 | #7 | 52°F | 39°F | 62°F | 11 | 5.1 | Low season |
| December | 6.8 | #8 | 46°F | 31°F | 57°F | 8 | 4.9 | Low season |
Near here
Nearby places in December
Nearby regions, nearest first. Distances are centre to centre, as the crow flies; they are not road distances or journey times.
CarinthiaAustria · about 50 miles
Balanced Overall 6.3 · Fair weather, 42°F (6°C) · Low season · Cost pricey
Friuli Venezia GiuliaItaly · about 50 miles
Balanced Overall 3.8 · Poor weather, 50°F (10°C) · Low season · Cost moderate
Venice & the VenetoItaly · about 110 miles
Balanced Overall 4.0 · Poor weather, 50°F (10°C) · Low season · Cost moderate
Croatia's coastSplit, Dubrovnik · Croatia · about 140 miles
Balanced Overall 3.9 · Poor weather, 53°F (12°C) · Off season · Cost moderate
Munich & Upper BavariaGermany · about 180 miles
Balanced Overall 5.8 · Fair weather, 43°F (6°C) · Moderate season · Cost pricey
Elsewhere in Europe
Better December weather than Ljubljana, Lake Bled & western Slovenia
Ljubljana, Lake Bled & western Slovenia's weather ranks 9 of 28 mountain regions this month. These mountain regions outside Slovenia have clearly better weather on your dates, nearest first, each compared with Ljubljana, Lake Bled & western Slovenia.
How we knowSources, regional scope & scoring method Show detailsHide details
It's low season, 21% of the busiest month and 50% below its average month. That means about 16,000 overnight visitors on a typical December night across the region, 24% of them from Slovenia itself. Rentals booked through Airbnb, Booking, Expedia and Tripadvisor add up to 4,800 more: 30 for every 100 counted above. Some are the same properties counted twice.
| Climate suitability (HCI:Urban, 0–100) | 59 |
| How our weather was checked | Official climate averages for Ljubljana Bezigrad from the national weather service, every month: afternoon highs typically within 1°F (0.8°C), night lows within 1°F (0.4°C). |
| Tourist nights per 1,000 residents per day | 16 |
| Busiest month here | August · 78 |
| Visitors as share of people present | 1.6% |
| Rank among Europe's regions this month | 83rd percentile |
| Domestic share of nights | 24% |
| Platform rental nights per 100 counted nights | 30 |
| Visitor share if every platform night were extra | 2.0% |
| National hotel-price season | Slovenia historical 2024–2025 index: A little below usual (−5% vs its average month). Not a local room quote. |
| Population used | 1.0 million |
| Statistical region | SI04 · Zahodna Slovenija |
Crowds: Eurostat nights spent at tourist accommodation, by month and NUTS 2 region, 2024–2025 average. Overnight visitors per night is the month's nights divided by its days; the per-1,000 figure is Eurostat's, against each year's population. Platform rentals: Eurostat nights booked via Airbnb, Booking, Expedia and Tripadvisor, 2024–2025 average, shown separately because some properties are in both counts. Weather: Holiday Climate Index computed from ERA5 reanalysis with daily highs, night lows and rain days corrected from open national weather-service station records, 2011–2025, population-weighted to the region; day-by-day figures are the same data averaged by date. Heat and rain odds are counted across those years. Sunrise and sunset: NOAA solar equations, local time. Prices: Eurostat price level index and HICP, national. Full method · this region's data.