Novo Mesto Weather in December
During December, Novo Mesto experiences low daytime temperatures of 6°C (43°F) and cooler nights around -2°C (28°F). As part of the winter season, expect quite a bit of snow/rainfall. Around 92 mm (3.6 in) is typical.
Rainfall in Novo Mesto in December
You can expect snow/rain on roughly 14 days based on historical data, averaging 92 mm (3.6 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Novo Mesto in December
Temperatures in Novo Mesto in December top out at 6°C (43°F) and drop to -2°C (28°F) overnight. December is part of winter. Cold conditions persist throughout the day, so warm clothing is important from the moment you head outside. Nights are well below freezing at -2°C (28°F). An extra blanket is a good idea if you feel the cold, especially in older or less well-heated accommodation.
Sunshine in Novo Mesto in December
This month sees fewer sunny days, with about 57 hours of sunshine, perfect for those who enjoy cooler temperatures.December in Novo Mesto has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Slovenia, check out our Novo Mesto's climate page.
Novo Mesto Temperature in December
Min Temperature
-2°C (28°F)
Max Temperature
6°C (43°F)
Chance of Rain
47%
Precipitation
92 mm (3.6 in)
Rainy days
14 days
Humidity
87% *
Sunshine
57 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Novo Mesto typically stay consistent throughout December, with daily highs averaging around 6°C (43°F). Nights are very cold, with lows typically ranging from -4°C (25°F) to 0°C (32°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Novo Mesto in December
Browse day-by-day weather records for Novo Mesto spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Novo Mesto historical weather extremes in December
According to our 39 years of weather records for Novo Mesto, the following extremes were recorded between 1986 and 2025.
- The hottest December day on record in Novo Mesto reached 18°C (64°F) (December 19, 1989).
- The lowest overnight temperature recorded in December was -19°C (-2°F) (December 31, 1996).
Best Places in Slovenia in December
Find out more about the weather in Slovenia and which places have the best travel conditions in this month. See all of Slovenia in December →
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What to Wear in Novo Mesto in December
Cold weather calls for smart layering in December. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Prepare for significant rainfall with proper waterproof clothing and shoes. With limited sunshine expected, sunglasses aren't a priority for packing.What To Do in Novo Mesto in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Slovenia, check out our Novo Mesto's climate page.
Temperature Rainfall Sunshine Humidity
See the full Novo Mesto climate overview or explore weather in Slovenia.
