Slovenia in January: where is it warmest?
In January, Koper is the warmest place with 8 °C by day, Bled the coolest with 3 °C. 0 of 10 destinations have good holiday weather.
All destinations in January, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
Slovenia in January: quick answers
Slovenia in January: where is it warmest?
The warmest places in January are Koper (8 °C), Piran (8 °C) and Izola (8 °C).
Slovenia in January: where is the sea warmest?
The sea is warmest at Koper (11 °C), Piran (11 °C) and Izola (11 °C).
Slovenia in January: where is the weather best?
The best holiday weather in January – warm, sunny and dry – is in Maribor, Ptuj and Celje.
Slovenia month by month
Slovenia: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences