Climate guide for Ljubljana, Slovenia

Best Time to Visit
Ljubljana

How to read the score (0–10)
05810
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About Ljubljana

Choose May-September for this rhythm: rent a bike along the river, visit the castle funicular, and browse the market. Mild evenings suit terrace hopping after hilltop views.

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Travel Tips

River Path Mornings
The Ljubljanica walkways and Triple Bridge are quietest before 9 a.m. Castle funicular queues grow by late morning; walking up is a steeper but scenic alternative.
Car-Free Centre & Buses
The historic core is largely pedestrian and bike-friendly. City buses reach the castle base, Tivoli and the train station; buy urban tickets via app or kiosks before boarding.
Castle & Day-Trip Tickets
Ljubljana Castle tickets cover museum areas; the funicular can be bundled. Lake Bled and Postojna Cave day trips sell out in summer - reserve return transport the day before.
Green City Etiquette
Ljubljana is proud of its green credentials - use refill fountains and sort recycling at public bins. Cafe culture is relaxed; dogs are common on terraces, so ask before sharing outdoor tables with pets nearby.

Things to do in Ljubljana

Ljubljana, Slovenia. Live activities and tours from GetYourGuide, matched to this destination.

When to visit Ljubljana: the short answer

The best time to visit Ljubljana is June, followed by July, August. Those months combine the most usable temperatures with the fewest lost days to rain: June averages 20°C with 92 mm of rain and about 28 sunny days. The months to avoid unless you have a specific reason are December, January. If budget matters more than perfect weather, November is the strongest of the low-rate months at 5/10.

Across the year Ljubljana swings from 1°C in January to 23°C in July, a 22-degree spread, while rainfall ranges from 51 mm in February to 154 mm in September. That is the whole planning problem in one sentence: Ljubljana is not equally good year-round, and the difference between the best and worst month here is 4.1 points on a 10-point scale.

Warmest month: July (23°C). Coolest: January (1°C). Driest: February (51 mm). Wettest: September (154 mm).

Ljubljana month by month

January in Ljubljana — the hardest end of the year

Hardest · 4.2/10

January averages 1°C (33°F), cold enough that sightseeing works in bursts rather than in one long day on foot.

At 110 mm this is a genuinely wet month: about 16 sunny days in total, and outdoor plans need an indoor fallback.

It scores 4.2/10 here, 11th of 12 months, against 8.3/10 in the destination's best month.

Expect mid-season pricing, and crowds are light for this destination.

Pack insulated layers, a windproof shell, gloves and boots with grip, a proper rain shell rather than an umbrella.

If your dates are flexible, June is materially better in Ljubljana — 4.1 points higher on the same scale.

February in Ljubljana — workable with trade-offs

Trade-offs · 6.3/10

February averages 3°C (38°F), cold enough that sightseeing works in bursts rather than in one long day on foot.

Rainfall runs 51 mm, so plan one flexible day in three; you still get about 18 sunny days and 10.4 hours of daylight.

It scores 6.3/10 here, 9th of 12 months, against 8.3/10 in the destination's best month.

Expect mid-season pricing, and crowds are moderate.

Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.

If your dates are flexible, June is materially better in Ljubljana — 2 points higher on the same scale.

March in Ljubljana — workable with trade-offs

Trade-offs · 6.7/10

March averages 6°C (43°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.

Rainfall runs 86 mm, so plan one flexible day in three; you still get about 23 sunny days and 11.9 hours of daylight.

It scores 6.7/10 here, 7th of 12 months, against 8.3/10 in the destination's best month.

Expect mid-season pricing, and crowds are moderate.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

If your dates are flexible, June is materially better in Ljubljana — 1.6 points higher on the same scale.

April in Ljubljana — reliably good (4th best month)

Good · 7.3/10

April averages 9°C (49°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.

Rainfall runs 91 mm, so plan one flexible day in three; you still get about 22 sunny days and 13.6 hours of daylight.

It scores 7.3/10 here, 4th of 12 months, against 8.3/10 in the destination's best month.

Expect mid-season pricing, and crowds are moderate.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

May in Ljubljana — reliably good (5th best month)

Good · 7.3/10

May averages 15°C (59°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.

At 140 mm this is a genuinely wet month: about 23 sunny days in total, and outdoor plans need an indoor fallback.

It scores 7.3/10 here, 5th of 12 months, against 8.3/10 in the destination's best month.

Expect mid-season pricing, and crowds are moderate.

Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.

June in Ljubljana — the year's strongest window

Best window · 8.3/10

June averages 20°C (68°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

Rainfall runs 92 mm, so plan one flexible day in three; you still get about 28 sunny days and 15.7 hours of daylight.

On our climate-comfort scale this is the top-ranked month of the year for Ljubljana at 8.3/10 — the reference point every other month on this page is measured against.

Expect mid-season pricing, and crowds are moderate.

Pack light clothing, swimwear and real sun protection, a packable rain layer.

July in Ljubljana — reliably good (2nd best month)

Good · 8.2/10

July averages 23°C (73°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

Rainfall runs 96 mm, so plan one flexible day in three; you still get about 31 sunny days and 15.3 hours of daylight.

It scores 8.2/10 here, 2nd of 12 months, against 8.3/10 in the destination's best month.

Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack light clothing, swimwear and real sun protection, a packable rain layer.

August in Ljubljana — reliably good (3rd best month)

Good · 8.2/10

August averages 22°C (71°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

Rainfall runs 98 mm, so plan one flexible day in three; you still get about 28 sunny days and 14.1 hours of daylight.

It scores 8.2/10 here, 3rd of 12 months, against 8.3/10 in the destination's best month.

Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack light clothing, swimwear and real sun protection, a packable rain layer.

September in Ljubljana — reliably good (6th best month)

Good · 7/10

September averages 16°C (62°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.

At 154 mm this is a genuinely wet month: about 24 sunny days in total, and outdoor plans need an indoor fallback.

It scores 7/10 here, 6th of 12 months, against 8.3/10 in the destination's best month.

Expect mid-season pricing, and crowds are moderate.

Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.

October in Ljubljana — workable with trade-offs

Trade-offs · 6.4/10

October averages 13°C (56°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.

At 148 mm this is a genuinely wet month: about 22 sunny days in total, and outdoor plans need an indoor fallback.

It scores 6.4/10 here, 8th of 12 months, against 8.3/10 in the destination's best month.

Expect mid-season pricing, and crowds are moderate.

Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.

If your dates are flexible, June is materially better in Ljubljana — 1.9 points higher on the same scale.

November in Ljubljana — workable with trade-offs

Trade-offs · 5/10

November averages 6°C (42°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.

At 117 mm this is a genuinely wet month: about 17 sunny days in total, and outdoor plans need an indoor fallback.

It scores 5/10 here, 10th of 12 months, against 8.3/10 in the destination's best month.

Expect low-season pricing, and crowds are light for this destination.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.

If your dates are flexible, June is materially better in Ljubljana — 3.3 points higher on the same scale.

December in Ljubljana — the hardest end of the year

Hardest · 4.2/10

December averages 2°C (36°F), cold enough that sightseeing works in bursts rather than in one long day on foot.

Rainfall runs 98 mm, so plan one flexible day in three; you still get about 11 sunny days and 8.7 hours of daylight.

It scores 4.2/10 here, 12th of 12 months, against 8.3/10 in the destination's best month.

Expect mid-season pricing, and crowds are light for this destination.

Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.

If your dates are flexible, June is materially better in Ljubljana — 4.1 points higher on the same scale.

Frequently asked

When is the best time to visit Ljubljana, Slovenia?
In Ideal Weather mode, the best months to visit Ljubljana are June, July, August. June is the single peak month with an Ideal Weather score of 8.3/10 based on temperature, rainfall, humidity, daylight and historical sunny days.
What is the weather like in Ljubljana year-round?
Ljubljana has a climate profile suited to sightseeing and cultural travel. Average monthly temperatures range from 1°C in January to 23°C in July, with Ideal Weather scores between 4.2 and 8.3 out of 10.
Which months should I avoid in Ljubljana?
The lowest Ideal Weather-scoring months in Ljubljana are January (4.2/10), December (4.2/10), November (5.0/10). These months typically combine less comfortable temperatures, higher rainfall or fewer sunny days.
When is the rainy season in Ljubljana?
September is the wettest month in Ljubljana, averaging about 154 mm of rainfall. February is the driest, at roughly 51 mm.
Which is the sunniest month in Ljubljana?
July sees the most sun in Ljubljana, with about 31 sunny days on average - ideal for outdoor plans.
Is Ljubljana a good destination for sightseeing and cultural travel?
Ljubljana is well suited to sightseeing and cultural travel. Its highest Ideal Weather window (June, July, August) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Ljubljana calculated?
Each month receives an Ideal Weather score from 0-10 using ERA5 climate normals for Ljubljana: temperature comfort, precipitation, humidity, daylight hours, and historical sunny days - weighted for sightseeing and cultural travel.

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Curated in Ljubljana

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