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When to go · Slovenia

Slovenia in May

Great month. Green valleys, cave visits without queues; high trails still snowy.

Key facts

Verdict
Great
Crowds
Medium
Slovenia
Prices
Medium
Slovenia

Verdict

GreatVoykit month rating for Slovenia

Green valleys, cave visits without queues; high trails still snowy.

Is another month better than May?

No other month rates higher than May for Slovenia in this guide.

Weather in May

  • Ljubljana and the centre · Ljubljana, Škofja Loka, Mariborbest weather

    Continental: foggy winters in the Ljubljana basin, warm summers with storms.

  • Julian Alps · Bled, Bohinj, Kranjska Gora, Bovecfine

    Snow December–March; hiking June–September; the Soča side is among the wettest places in Europe in autumn.

  • Karst and coast · Piran, Izola, Koper, Lipicabest weather

    Mediterranean; the bora wind blasts the Karst in winter; sea swimming June–September.

  • Mediterranean; sea swimming roughly May–October, warmest Jul–Aug. Bora wind can blow cold in winter.

  • Caves stay about 8–12 °C (46–54 °F) all year; the plateau is cooler and windier than the coast.

  • Eastern Slovenia: Maribor / Ptuj · Drava valleybest weather

    Continental: warm summers, cold winters, rain spread through the year.

  • Eastern Slovenia: Prekmurje · Mura plainbest weather

    Slightly drier and flatter; fog can sit for days in late autumn and winter.

  • Julian Alps: Julian Alps · Bled, Bohinj, Soča valley, Kranjska Gorabest weather

    Valley summers are mild; afternoon thunderstorms June–August. Snow closes high passes in winter — check local conditions and seasonal closures before driving up a valley.

  • Pohorje-Savinjska: Pohorje plateau · Ridge above 1,000 m, west and east of the summitbest weather

    Cooler and wetter than the valleys; snow cover on the ridge typically December to March, and the ski season depends on it.

  • Pohorje-Savinjska: Savinja valley and Celje basin · Celje, Laško, Slovenske Konjice, Slovenj Gradecbest weather

    Valley heat in July and August; afternoon thunderstorms are common in summer.

  • Southeastern Slovenia: Novo Mesto / Brežice · Krka and Sava valleysbest weather

    Continental valley climate: warm summers, cold winters with snow; spring and autumn are the pick. Check current forecasts before travelling.

  • Ljubljana21 °C (70 °F) / 10 °C (50 °F), 14 rain days
  • Bled20 °C (68 °F) / 8 °C (46 °F), 12 rain days
  • Bovec18 °C (64 °F) / 7 °C (45 °F), 14 rain days
  • Brežice22 °C (72 °F) / 10 °C (50 °F), 12 rain days
  • Celje22 °C (72 °F) / 12 °C (54 °F), 11 rain days
  • Divača23 °C (73 °F) / 12 °C (54 °F), 7 rain days
  • Dovje-Mojstrana18 °C (64 °F) / 7 °C (45 °F), 13 rain days
  • Grosuplje21 °C (70 °F) / 11 °C (52 °F), 5 rain days
  • Idrija20 °C (68 °F) / 10 °C (50 °F), 10 rain days
  • Izola23 °C (73 °F) / 13 °C (55 °F), 8 rain days
  • Jesenice20 °C (68 °F) / 8 °C (46 °F), 13 rain days
  • Jezersko21 °C (70 °F) / 12 °C (54 °F), 8 rain days
  • Kamnik21 °C (70 °F) / 9 °C (48 °F), 12 rain days
  • Kobarid20 °C (68 °F) / 10 °C (50 °F), 12 rain days
  • Koper23 °C (73 °F) / 13 °C (55 °F), 10 rain days
  • Kranj22 °C (72 °F) / 11 °C (52 °F), 7 rain days
  • Kranjska Gora19 °C (66 °F) / 8 °C (46 °F), 12 rain days
  • Lendava22 °C (72 °F) / 12 °C (54 °F), 7 rain days
  • Lipica22 °C (72 °F) / 13 °C (55 °F), 9 rain days
  • Maribor22 °C (72 °F) / 10 °C (50 °F), 12 rain days
  • Murska Sobota22 °C (72 °F) / 11 °C (52 °F), 9 rain days
  • Nova Gorica21 °C (70 °F) / 12 °C (54 °F), 4 rain days
  • Novo Mesto22 °C (72 °F) / 11 °C (52 °F), 9 rain days
  • Piran22 °C (72 °F) / 13 °C (55 °F), 9 rain days
  • Portorož23 °C (73 °F) / 13 °C (55 °F), 4 rain days
  • Postojna20 °C (68 °F) / 12 °C (54 °F), 7 rain days
  • Ptuj21 °C (70 °F) / 11 °C (52 °F), 9 rain days
  • Ribnica21 °C (70 °F) / 9 °C (48 °F), 11 rain days
  • Sevnica22 °C (72 °F) / 11 °C (52 °F), 11 rain days
  • Sežana22 °C (72 °F) / 12 °C (54 °F), 9 rain days
  • Škofja Loka21 °C (70 °F) / 10 °C (50 °F), 13 rain days
  • Slovenj Gradec20 °C (68 °F) / 8 °C (46 °F), 12 rain days
  • Srednja Dobrava20 °C (68 °F) / 11 °C (52 °F), 9 rain days
  • Tolmin22 °C (72 °F) / 12 °C (54 °F), 6 rain days
  • Trbovlje22 °C (72 °F) / 10 °C (50 °F), 12 rain days
  • Uskovnica16 °C (61 °F) / 7 °C (45 °F), 11 rain days

Festivals and holidays

Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.

  • Day of Uprising, Labour Day

    27 Apr, 1–2 May

    A long spring break; bonfires on 30 April; coast busy.

Crowds and prices

Crowds · Slovenia
Medium
Prices · Slovenia
Medium

Compare two months

Weather, crowds and prices for any two months in Slovenia, side by side.

  • Verdict

    May: Great

    Jun: Great

  • Crowds

    May: Medium

    Jun: High

  • Prices

    May: Medium

    Jun: Medium

  • Festivals listed

    May: 1

    Jun: 2

May: Green valleys, cave visits without queues; high trails still snowy.

June: Excellent: long days, open passes, sea warming.

Slovenia: figures are long-term averages from this guide, not a forecast.

What to pack

Nothing unusual for the weather this month.

Build the full packing list for your trip →

Where to go in May

Rated best or good this month

  • Ljubljana and the centre

    Best weather of the year (Ljubljana, Škofja Loka, Maribor)

  • Karst and coast

    Best weather of the year (Piran, Izola, Koper, Lipica)

  • Ljubljana

    Warm and green; long days.

  • Bled

    Best months: May–Jun, Sep

  • Brežice

    Best months: May–Sep

  • Celje

    Best months: May–Sep

  • Divača

    Best months: May–Sep

  • Grosuplje

    Best months: May–September

  • Idrija

    Best months: May–Sep

  • Izola

    Best months: May–Sep

  • Jesenice

    Best months: May–Sep

  • Kamnik

    Best months: May–Jun, Sep–Oct