Postojna Travel Guide

City City in Postojna, Slovenia

Visitors come for Postojna Cave and nearby Predjama Castle: guided tours through limestone caverns, a tourist train into cool tunnels, karst hiking routes, and local inns serving jota and rustic bread.

Main image
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Costs
USD 60-110 / day
Modest tourist town; cave tours dominate expenses.
Safety
Safe and tourist-oriented
Low crime; heavy foot traffic near cave attractions.
Best Time
April-October
Cave tours open year-round; warmer months easier for side trips.
Time
Weather
Population
9,605
Infrastructure & Convenience
Well-connected by bus and car; English in tourist services.
Popularity
Draws families and cave enthusiasts from Ljubljana and the coast.
Known For
Postojna Cave, Predjama Castle nearby, Karst landscape, Cave train tours, Stalactites and stalagmites, Guided underground tours, Family-friendly attractions, Speleology history
Postojna Cave features an electric cave train that has been operating since 1872.

Why Visit Postojna? #

Postojna is synonymous with subterranean adventure thanks to the vast Postojna Cave system and its electric cave train. Above ground, Predjama Castle-perched in a cliff face-adds a medieval contrast to the karst landscape. Guided cave tours and nearby show caves make the geology accessible to families and curious travelers. The area’s dramatic limestone features and storybook castle create a memorable combination of natural wonder and history.

Top Things to Do in Postojna

All Attractions ›
Don't Miss
  • Postojna Cave (Postojnska jama) - Board the Postojna Cave train to explore vast caverns and stalactite formations.
  • Predjama Castle - Explore dramatic Predjama Castle built into a cliff with subterranean passages and history.
  • Postojna Cave Park vivarium - Check the Postojna Cave Park's vivarium for native cave fauna including proteus.
Hidden Gems
  • Črna Valley - Explore the Črna Valley for quiet forest walks and karst features.
  • Postojna main square - Stroll Postojna's main square for cafés, bakeries, and local daily life.
  • Križna Cave (Križna jama) - Take a boat tour through Križna Cave's subterranean lakes and limestone formations.
Day Trips
  • Škocjan Caves - Visit Škocjan Caves UNESCO site for an enormous underground river canyon experience.
  • Lipica Stud Farm - Drive to Lipica Stud Farm to see Lipizzaner horses and historic stables.

Best Time to Visit Postojna #

Visit Postojna from late spring through early autumn for pleasant weather and full access to outdoor attractions alongside the famous caves. Winters are quieter and cooler but well-suited to indoor cave tours.

Winter
December - February · -3°C to 5°C (27°F to 41°F)
Postojna in winter feels cavernous and atmospheric; good for cave tours with fewer crowds, though the countryside is chilly and damp.
Spring
March - May · 5°C to 17°C (41°F to 63°F)
Spring is a sweet time to visit the caves and nearby trails - mild, green and less crowded than summer, with changing weather.
Summer
June - August · 18°C to 29°C (64°F to 84°F)
Summer is warm and vibrant, great for combining cave visits with outdoor adventures in the karst landscape, though tourist numbers rise.

Best Time to Visit Postojna #

Climate

Postojna's climate is classified as Oceanic - Oceanic climate with mild summers (peaking in August) and freezing winters (coldest in January). Temperatures range from -4°C to 25°C. Abundant rainfall (1616 mm/year), wettest in November.

Best Time to Visit
JulyAugustJune
Temperature & Rainfall
Temperature Range
36°
Warmest Month
-23°
Coldest Month
Monthly Conditions

January

January is the coldest month with highs of 3°C and lows of -4°C. Significant rainfall (107 mm) and mostly overcast skies.

39 Poor

Comfort

Feels Like Freezing
C
Temperature
-4°
91%
Humidity
Very Humid

Weather

107 mm
Rainfall
1.5 m/s
Wind
Calm
0.1
UV Index
Low
9.0h daylight

February

February is cold with highs of 5°C and lows of -3°C. Regular rainfall (93 mm) and mostly overcast skies.

41 Poor

Comfort

Feels Like Cold
C
Temperature
-3°
88%
Humidity
Very Humid

Weather

93 mm
Rainfall
1.7 m/s
Wind
Calm
0.3
UV Index
Low
10.2h daylight

March

March is cold with highs of 8°C and lows of -1°C. Significant rainfall (120 mm) and partly cloudy skies.

43 Poor

Comfort

Feels Like Cold
C
Temperature
-1°
83%
Humidity
Very Humid

Weather

120 mm
Rainfall
2.0 m/s
Wind
Calm
0.5
UV Index
Moderate
11.8h daylight

April

April is cold with highs of 12°C and lows of 3°C. Significant rainfall (134 mm) and partly cloudy skies.

51 Acceptable

Comfort

Feels Like Cold
C
Temperature
12°
78%
Humidity
Very Humid

Weather

134 mm
Rainfall
2.0 m/s
Wind
Calm
0.9
UV Index
Moderate
13.4h daylight

May

May is cool with highs of 17°C and lows of 6°C. Significant rainfall (127 mm) and partly cloudy skies.

61 Good

Comfort

12°
Feels Like Cool
12°C
Temperature
17°
76%
Humidity
Very Humid

Weather

127 mm
Rainfall
1.9 m/s
Wind
Calm
1.3
UV Index
High
14.7h daylight

June

June is cool with highs of 21°C and lows of 10°C. Significant rainfall (157 mm) and partly cloudy skies.

65 Good

Comfort

15°
Feels Like Cool
15°C
Temperature
10° 21°
75%
Humidity
Very Humid

Weather

157 mm
Rainfall
1.8 m/s
Wind
Calm
1.7
UV Index
Very High
15.4h daylight

July

July is cool with highs of 24°C and lows of 12°C. Significant rainfall (110 mm).

79 Very Good

Comfort

18°
Feels Like Cool
18°C
Temperature
12° 24°
71%
Humidity
Very Humid

Weather

110 mm
Rainfall
1.7 m/s
Wind
Calm
1.8
UV Index
Very High
15.1h daylight

August

August is the warmest month with highs of 25°C and lows of 13°C. Significant rainfall (122 mm).

79 Very Good

Comfort

19°
Feels Like Mild
19°C
Temperature
13° 25°
70%
Humidity
Very Humid

Weather

122 mm
Rainfall
1.6 m/s
Wind
Calm
1.5
UV Index
High
13.9h daylight

September

September is cool with highs of 20°C and lows of 9°C. Significant rainfall (146 mm) and partly cloudy skies.

61 Good

Comfort

15°
Feels Like Cool
15°C
Temperature
20°
77%
Humidity
Very Humid

Weather

146 mm
Rainfall
1.5 m/s
Wind
Calm
0.9
UV Index
Moderate
12.4h daylight

October

October is cool with highs of 16°C and lows of 6°C. Significant rainfall (167 mm) and partly cloudy skies.

59 Acceptable

Comfort

11°
Feels Like Cool
11°C
Temperature
16°
85%
Humidity
Very Humid

Weather

167 mm
Rainfall
1.6 m/s
Wind
Calm
0.5
UV Index
Low
10.8h daylight

November

November is cold with highs of 10°C and lows of 2°C. The wettest month with heavy rain (180 mm) and mostly overcast skies.

45 Poor

Comfort

Feels Like Cold
C
Temperature
10°
90%
Humidity
Very Humid

Weather

180 mm
Rainfall
1.6 m/s
Wind
Calm
0.2
UV Index
Low
9.4h daylight

December

December is cold with highs of 5°C and lows of -2°C. Significant rainfall (153 mm) and mostly overcast skies.

35 Poor

Comfort

Feels Like Cold
C
Temperature
-2°
91%
Humidity
Very Humid

Weather

153 mm
Rainfall
1.5 m/s
Wind
Calm
0.1
UV Index
Low
8.6h daylight

How to Get to Postojna

Postojna is straightforward to reach from Ljubljana by train or bus; the town's train station is on the Ljubljana-Koper line and shuttle/bus links connect the station to the cave and nearby sights. Trieste is a viable alternative arrival airport if coming from Italy.

By Air

Ljubljana Jože Pučnik Airport (LJU): Ljubljana is the most convenient airport for visiting Postojna. The drive or shuttle from LJU to Postojna takes about 40-60 minutes; typical shuttle or bus fares are around €6-12.

Trieste (TRS): Trieste airport is also an option - road transfers to Postojna take roughly 50-75 minutes and shuttle or bus fares are commonly €10-20.

By Train & Bus

Train: Postojna is on the mainline between Ljubljana and Koper; trains from Ljubljana take approximately 40-50 minutes and single tickets cost around €4-6. The station is a short walk or a short local bus/taxi ride from the Postojna Cave and town centre.

Bus: Regular buses from Ljubljana and other Slovenian towns serve Postojna; there are also local buses linking the station with attractions like Predjama Castle and Postojna Cave. Bus fares for regional trips are usually a few euros.

How to Get Around Postojna #

Postojna is a small town and easy to get around on foot; the main attraction, Postojna Cave, has well-organised access from town. Regional buses and trains link to Ljubljana and other Slovenian towns; taxis exist but are limited. For visiting the caves and nearby sights, many people use organised tours or local shuttles.

Where to Stay in Postojna #

Budget
Near Postojna Cave - $40-110/night
Budget travellers often stay in small guesthouses or Hotel Jama near the cave; options are limited but practical for cave visits.
Mid-Range
Close to Cave Park - $110-180/night
Mid-range hotels cater to cave visitors with comfortable rooms and straightforward access to Postojna Cave and nearby attractions.
Luxury
Postojna vicinity - $160-320/night
There are only a few higher-end options near Postojna; luxury stays are typically smaller boutique hotels or country estates.

Where to Eat in Postojna #

Breakdown of cuisine types found across Postojna's restaurants and food venues, based on OpenStreetMap data.

Pizza
Burger
Regional
Kebab
Evapi
Italian
Fish & Chips
Cake
Burek
Pasta
Chinese
Dessert
Hot Dog
Filipino
Sandwich
Wine Bar
Breakfast
Pleskavica
Coffee Shop
Steak House

Nightlife in Postojna #

Nightlife in Postojna is very limited. Evenings tend to be quiet outside of hotels and a few local bars; most visitors focus on daytime cave visits rather than late-night entertainment.

Shopping in Postojna #

Shopping in Postojna is practical and tourist-oriented near the cave complex: expect souvenir shops, local food stalls and a few small retailers in town selling everyday goods. Most specialised shopping is found in larger Slovenian cities.

Nearby Cities #