August remains warm and popular with both domestic and international visitors; coastal towns and Lake Bled see high visitor numbers. Late-August can be busy but weather usually stays favourable for outdoor activities.
SeasonHigh SeasonTemperature 18 to 29°C (64 to 84°F)Crowds HighPrices High
High seasonShoulderLow season
Weather by City in August
CityLow / highRain
Ljubljana
Mild
13°25° 126 mm
Maribor
Mild
13°25° 125 mm
Celje
Mild
13°25° 126 mm
Kranj
Mild
13°25° 126 mm
Koper
Mild
20°28° 88 mm
Novo Mesto
Mild
14°26° 111 mm
Velenje
Mild
12°24° 131 mm
Average daily low and high (°C) and monthly rainfall. The badge shows how it feels, allowing for humidity.
Temperature map
-30°-20°-10°0°10°20°30°40°
Average temperature across Slovenia in August.
Where to Go in Slovenia in August
Julian Alps & Alpine Slovenia
Bled, Bohinj, Kranjska Gora, Triglav
Early autumn sees crisp mornings and clearer long-distance views as humidity drops; larch forests around Pokljuka and Triglav begin to gold and red. This is an excellent time for ridge traverses and photography, with fewer hut crowds and lower insect numbers. Some higher trails close by late autumn, so check hut openings and prepare for sudden temperature drops-thermal layers and an insulated jacket are recommended for alpine bivouacs.
Soča Valley & Goriška Hills
Bovec, Kobarid, Tolmin, Nova Gorica, Goriška Brda
Late autumn brings a noticeable chill, with mist and low cloud filling tributary gorges and occasional early snow on nearby peaks. Tolmin’s cultural calendar and small museums become appealing shelter from blustery days. For travelers, accommodation and adventure operators slow their pace, but the region retains its dramatic moodiness-bring warm layers and expect some seasonal closures for high-elevation trails.
Slovenian Coast & Karst
Piran, Koper, Portorož, Škocjan Caves, Lipica
Late autumn often brings a return to wetter, blustery weather with the bora and occasional heavy rain pushing in from the Adriatic; the landscape takes on a quieter, more reflective mood. Coastal hotels scale back schedules and many restaurants close weekday evenings. Travelers who enjoy quiet exploration and off-season prices will find good value, but always have waterproofs and a warm layer for wind-exposed walks.
Ljubljana & Central Slovenia
Ljubljana, Kamnik, Radovljica, Central Sava Valley
Late autumn often carries a damp, grey feel as temperatures drop and fog can linger in river valleys, occasionally requiring extra time to reach hilltop viewpoints. Cultural life shifts indoors-concerts, galleries, and cosy restaurants become appealing alternatives to outdoor sightseeing. Pack a warm, waterproof coat and non-slip footwear for slick pavements and stairs leading up to Ljubljana Castle.
Northeast & Southeast Lowlands
Prekmurje, Ptuj, Murska Sobota, Dolenjska, Bela Krajina, Rogaška
Late autumn brings crisp, cool days and often foggy mornings across river valleys; leaf fall can make countryside trails slippery. Thermal spas attract visitors seeking warmth while rural roads may be quieter, and accommodation prices dip. Pack waterproof boots and warmer layers for brisk walks among vineyards and woodlands-the mood is calm and atmospheric for slow travel.
Events & Festivals in August
Ljubljana Festival (concludes)
The capital's festival season carries on into August with concerts and performances.
Planning a trip to Slovenia?
See how August compares with the rest of the year, then read the full guide.
