Slovenia weather in December
Slovenia in December averages 2°C (35°F), 105 mm of rain and 1.7 hours of sun a day.
Of the twelve months in Slovenia, December is the second coldest, the fifth driest and the dullest.
- Average temp
- 2°C (35°F)
-1–4°C · 30–40°F
- Rainfall
- 105 mm
Showers likely
- Sunshine
- 1.7 h
hours per day
What is Slovenia like in December?
Daytime
Days are cool.
Rain
Some rain is likely; pack for showers.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for Slovenia in December?
A light rain jacket
About 105 mm falls this month — showers rather than washouts.
A warm mid-layer
Nights drop to around -1°C (30°F).
December compared with November and January
December in Slovenia is 5.2°C cooler than November and 33 mm drier than it, which averages 7°C (44°F).
December in Slovenia is about the same temperature as January and 37 mm wetter than it, which averages 1°C (34°F).
Daylight in Slovenia in December
On 15 December the sun is up for 8 hours 39 minutes in Slovenia, rising about 07:35 and setting about 16:14 local time.
December ends 11 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
No month in Slovenia has less daylight than December.
Travel guides for Slovenia
What to read before you book.
Slovenia weather by month
TemperatureRainfall
How December compares with the rest of the year
December is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 1°C / 34°F | 67 mm |
| February | 3°C / 37°F | 85 mm |
| March | 7°C / 45°F | 82 mm |
| April | 12°C / 53°F | 96 mm |
| May | 16°C / 61°F | 114 mm |
| June | 20°C / 68°F | 126 mm |
| July | 22°C / 72°F | 121 mm |
| August | 22°C / 71°F | 124 mm |
| September | 17°C / 62°F | 159 mm |
| October | 12°C / 54°F | 150 mm |
| November | 7°C / 44°F | 138 mm |
| December | 2°C / 35°F | 105 mm |
Similar weather in December
Other destinations whose December averages sit close to this one.
Check another month
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FAQs about Slovenia in December
December climate averages for Slovenia, 1991–2020.
Slovenia averages 2°C (35°F) in December, ranging from about -1°C (30°F) at night to 4°C (40°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 105 mm falls across December, enough to need a light jacket but not enough to reshape a trip.
They are about the same. December averages 2°C (35°F) and January 1°C (34°F), so temperature alone will not decide between them.
December is 5.2°C cooler than November, and 33 mm drier.
It is outside the easiest window. The most comfortable stretch here is April to September; December sits outside it, which usually means more heat, more rain, or both — worth it if you would rather have the place to yourself.
About 1.7 hours of sun a day on the 1991–2020 average, so daylight is short on useful sun.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what December is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 8 hours 39 minutes of daylight in mid-December, the least of any month in Slovenia.
On 15 December, sunrise is about 07:35 and sunset about 16:14 local time. Both shift across the month — the month ends 11 minutes shorter than it starts.
