Ljubljana Weather in May
May in Ljubljana typically sees daytime highs of 21°C (70°F) and nighttime lows of 10°C (50°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Ljubljana in May
Historically, approximately 16 days this month are expected to have rain, averaging 109 mm (4.3 in). This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Ljubljana in May
In May, expect pleasant temperatures in Ljubljana, with highs of 21°C (70°F) and lows of 10°C (50°F) at night. The difference between afternoon and evening temperatures is usually noticeable. Nights fall to 10°C (50°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Ljubljana in May
There are approximately 234 hours of sunshine this month, resulting in mostly clear days.
Wind Speed in Ljubljana in May
Wind speeds average 3 m/s (6 knots) during May. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August and September typically offer the best weather for Ljubljana.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Slovenia, check out our Ljubljana's climate page.
Ljubljana Temperature in May
Min Temperature
10°C (50°F)
Max Temperature
21°C (70°F)
Chance of Rain
53%
Precipitation
109 mm (4.3 in)
Rainy days
16 days
Humidity
68%
Windspeed
3 m/s (6 knots)
Sunshine
234 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ljubljana typically rise from around 19°C (66°F) at the start of May to approximately 22°C (72°F) by the end. Nights are cool, with lows typically ranging from 7°C (45°F) to 10°C (50°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Ljubljana in May
Browse day-by-day weather records for Ljubljana spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ljubljana historical weather extremes in May
Based on weather observations in Ljubljana between 1976 and 2025, these are the recorded extremes during May.
- The warmest day in May was on May 26, 2009, with a maximum of 33°C (91°F).
- On May 4, 1981, Ljubljana saw its coldest May day with temperatures maxing out at 6°C (43°F).
- Ljubljana registered its coldest May night on May 11, 2005, with temperatures dropping to -5°C (23°F).
Best Places in Slovenia in May
Find out more about the weather in Slovenia and which places have the best travel conditions in this month. See all of Slovenia in May →
perfect weather
pleasant
tolerable
unpleasant
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What to Wear in Ljubljana in May
For Ljubljana in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Ljubljana in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Slovenia, check out our Ljubljana's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Ljubljana climate overview or explore weather in Slovenia.
