August
Best time
26.4°C / 15.5°C
10 rain days
warm, rainy
- comfortable temperatures (avg high 26.4°C / 80°F)
- manageable rain (10 days)
- warm evenings without humidity overload
Best time to visit Ljubljana
Ljubljana, Slovenia — ranked month by month from data: temperature, rainfall, snow, and peak hazard seasons. The standouts: August, June, September.
Best · August & June
About Ljubljana
Ljubljana is the capital and largest city of Slovenia, located along a trade route between the northern Adriatic Sea and the Danube region, north of the country's largest marsh, it has been inhabited since prehistoric times. It is the country's cultural, educational, economic, political and administrative centre and the seat of the Urban Municipality of Ljubljana.
— condensed from Wikipedia
Best months to visit
June
Best time
25.1°C / 14°C
12 rain days
warm, rainy
- comfortable temperatures (avg high 25.1°C / 77°F)
- warm evenings without humidity overload
September
Best time
21.2°C / 11.4°C
12 rain days
mild, rainy
- comfortable temperatures (avg high 21.2°C / 70°F)
July
Best time
27.1°C / 15.9°C
12 rain days
warm, rainy
- warm evenings without humidity overload
October
Best time
16.6°C / 7.3°C
10 rain days
mild, rainy
- manageable rain (10 days)
April
Best time
15.9°C / 4.5°C
10 rain days
cool, rainy
- manageable rain (10 days)
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OK — shoulder months
May
OK
19.2°C / 9.1°C
16 rain days
mild, very wet
- comfortable temperatures (avg high 19.2°C / 67°F)
March
OK
11.8°C / 0.6°C
9 rain days
cool
- manageable rain (9 days)
November
OK
10.3°C / 3.2°C
11 rain days
cool, rainy
February
OK
7.6°C / -1.6°C
10 rain days
chilly, freezing nights, rainy
- manageable rain (10 days)
December
OK
5.8°C / -1.3°C
9 rain days
chilly, freezing nights
- manageable rain (9 days)
January
OK
5.2°C / -2.8°C
9 rain days
chilly, freezing nights
- manageable rain (9 days)
How we ranked these
Each month is scored on temperature comfort (18–27°C avg high is the sweet spot), rainfall (more rain days = lower score), snow days, and peak hazard seasons (hurricanes, monsoons, etc.). Green-tier months are within ideal range with no major issues. Yellow are workable but with trade-offs. Red has at least one significant problem — extreme heat or cold, heavy rain, or peak storm season.