Climate averages 1991–2020
Ljubljana weather
in January.
A cold, moderately wet month: the coolest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cold month in Ljubljana: daytime highs average 3.7°C and nights cool to about -2.7°C. By daytime temperature it is the coolest month of the year.
Expect about 59 mm of rain on roughly 8 days, which makes January a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 05 min on an average January day.
The nearest other city in this atlas is Klagenfurt am Wörthersee (66 km away). In January its highs average 3.1°C, 0.6°C cooler than Ljubljana, with 48 mm of rain.
Among the 2 cities listed in Slovenia, Ljubljana ranks 2nd of 2 for the warmest January highs and 2nd of 2 for the driest January (rainfall, lowest first). The mean January high of those 2 cities is 4.1°C; Ljubljana is 0.4°C cooler than that mean.
From January to February, average highs rise by 2.0°C to 5.7°C, and monthly rainfall rises from 59 mm to 75 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Ljubljana climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 3.7°C-2.7°C | -2.7°C | 59 | 8.0 | 9.19 h |
| February | 5.7°C-2.3°C | -2.3°C | 75 | 8.5 | 10.310 h |
| March | 10.3°C1.3°C | 1.3°C | 76 | 10.1 | 11.912 h |
| April | 15.1°C5.3°C | 5.3°C | 90 | 12.0 | 13.514 h |
| May | 19.3°C9.7°C | 9.7°C | 103 | 13.4 | 14.915 h |
| June | 23.2°C13.6°C | 13.6°C | 105 | 13.4 | 15.716 h |
| July | 25.3°C15.8°C | 15.8°C | 95 | 11.3 | 15.415 h |
| August | 25.2°C15.9°C | 15.9°C | 112 | 11.1 | 14.214 h |
| September | 19.8°C11.5°C | 11.5°C | 125 | 11.1 | 12.613 h |
| October | 14.6°C7.3°C | 7.3°C | 117 | 10.2 | 11.011 h |
| November | 9.1°C3.1°C | 3.1°C | 121 | 11.2 | 9.510 h |
| December | 4.3°C-1.9°C | -1.9°C | 90 | 9.2 | 8.79 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Klagenfurt am Wörthersee in JanuaryAustria · 66 kmHigh 3.1°C · Low -4.0°C · 48 mm rain
- Trieste in JanuaryItaly · 72 kmHigh 7.2°C · Low 1.1°C · 90 mm rain
- Rijeka in JanuaryCroatia · 81 kmHigh 6.8°C · Low 0.7°C · 122 mm rain
- Udine in JanuaryItaly · 98 kmHigh 6.3°C · Low -1.7°C · 75 mm rain
- Maribor in JanuarySlovenia · 104 kmHigh 4.5°C · Low -3.0°C · 38 mm rain
- Zagreb in JanuaryCroatia · 117 kmHigh 4.7°C · Low -2.2°C · 49 mm rain
- Graz in JanuaryAustria · 134 kmHigh 3.4°C · Low -5.3°C · 27 mm rain
- Bihać in JanuaryBosnia and Herzegovina · 174 kmHigh 5.5°C · Low -1.4°C · 90 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Ljubljana) is explained once on the Ljubljana year overview and on the Sources, method and limits page.