Ljubljana Weather in May
In May, Ljubljana averages a high of 21°C (70°F) and a low of 10°C (50°F), from 55 years of daily records (1971–2025).
21°C
Average high
70°F
10°C
Average low
50°F
32°C
Record high
90°F · May 31, 1999
-1°C
Record low
30°F · May 1, 1976
What May Is Like in Ljubljana
- The coldest May reading, -1°C (30°F) on May 1, 1976, has not been matched in 49 years.
- May in Ljubljana has become 1.3°C (2.3°F) warmer on average: the 2011–2025 average against 1970–1989.
- The warmest May in the record was 2018; the coldest was 1991.
At least 1 mm of rain falls on 37% of May days, and the month averages 120 mm in total.
Warmest: 2003 (25.2°C)Latest: 2025 (20.6°C)10-year averageLong-run average (21.3°C)
Look Up a Day in May
See the weather in Ljubljana on any May date, year by year.
Source: NOAA GHCN-Daily, Ljubljana Bezigrad (1971–2025). Averages cover 1971–2025. How we compute this