When to Cycle in Slovenia

April marks the start of the cycling season in Slovenia. The valleys and lowlands come alive with blossoms and greenery, while alpine passes, like Vršič and Mangart, are usually still closed or icy at this time of year. The Slovenian Coast, Karst Plateau, and wine regions like Brda and Vipava Valley are excellent choices, offering rolling hills, vineyards, and mild weather. Expect daytime highs of 12–20°C (54–68°F). 

May is one of the very best months to cycle in Slovenia. Nearly all regions are accessible except the highest alpine roads, and the landscapes are lush and green. The Triglav National Park trails around Bled and Bohinj are at their most beautiful. Temperatures range from 15–25°C (59–77°F), with long, pleasant days. The country is still quiet before the summer crowds arrive, making this an ideal month for both cultural routes and mountain rides.

June is the peak of cycling season for cycling holidays in Slovenia, with long daylight hours and warm but comfortable weather. Mountain passes such as Vršič, Mangart Saddle, and Pokljuka Plateau typically open this month, offering Slovenia’s most iconic climbs. Lakes like Bohinj and Bled are perfect for a refreshing swim after a ride. Expect daytime highs of 20–28°C (68–82°F). Occasional afternoon storms in the Alps are possible, so morning rides are recommended. 

July brings summer warmth and lively energy. All routes are open, but the heat makes timing important. Early mornings and late afternoons are best for cycling. The high Alps and shaded valleys of the Soča are fantastic for escaping the heat. Expect temperatures of 25–30°C (77–86°F), with some days even hotter in exposed areas. This is also one of the busiest months for tourism, so booking a Slovenia bike tour early is highly recommended. 

Similar to July, August is hot and bustling with festivals and summer crowds. This is the best month for a high-altitude cycling tour in Slovenia, especially in the Julian Alps and Karawanks, where cooler air makes climbs rewarding. Cycling along the Adriatic Coast is a good choice thanks to sea breezes and cultural events. Expect highs of 25–30°C (77–86°F), with warm evenings ideal for post-ride relaxation. 

September is often considered the very best month for Slovenia bike tour. The weather is warm but not hot, and the tourist crowds thin out. The first autumn colors begin to paint the valleys and vineyards, adding extra charm. All regions are rideable, from the Alps to wine country and the Karst Plateau - explore them all on our signature Alps to Adriatic tour. Expect temperatures of 18–25°C (64–77°F). There are no real “avoid” zones this month — Slovenia is at its cycling best.

October brings crisp air and golden autumn landscapes. It’s harvest season in the vineyard areas of Brda, Vipava, and Karst, making cycling here particularly rewarding. The lower Alpine valleys around Bled, Bohinj, and Kranjska Gora are also beautiful, though mornings can be chilly. Expect highs of 12–20°C (54–68°F). Higher mountain passes like Mangart and Vršič may close due to early snow, so focus on lower routes and wine regions.

From late autumn through early spring, the conditions are not well-suited for cycling holidays Slovenia. In the Alps and higher inland regions, snow often covers the roads, and when it doesn’t, temperatures are still low and mornings are frosty. Along the Slovenian Coast, snow is rare, but frequent rain, wind, and unpredictable weather make rides uncomfortable and unreliable.

If you’re determined to ride during these months, we recommend looking further south - Portugal and Spain offer the perfect winter cycling escape!