Slovenia in May: where is it warmest?
In May, Novo Mesto is the warmest place with 21 °C by day, Bled the coolest with 18 °C. 7 of 10 destinations have good holiday weather.
All destinations in May, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
Slovenia in May: quick answers
Slovenia in May: where is it warmest?
The warmest places in May are Novo Mesto (21 °C), Maribor (20 °C) and Ptuj (20 °C).
Slovenia in May: where is the sea warmest?
The sea is warmest at Koper (18 °C), Piran (18 °C) and Izola (18 °C).
Slovenia in May: where is the weather best?
The best holiday weather in May – warm, sunny and dry – is in Maribor, Ptuj and Novo Mesto.
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