Over the past 10 years, Ljubljana Marathon runners have faced temperatures ranging from 7\u00b0C (44\u00b0F) on cooler years to 18\u00b0C (64\u00b0F) in warmer editions. The median temperature of 14\u00b0C (57\u00b0F) puts this race in the neutral category for running conditions.
Wind speeds average 5 km/h during race hours, with peak gusts reaching 12 km/h in challenging years. Humidity sits around 78%, and there is a 20% chance of rain on race day.
These conditions translate to an estimated pace impact of +2.7% compared to ideal running conditions. For a 4-hour marathoner, that means roughly 6 minutes slower than a perfect-weather day.