Climate zone: Moderate zone of the northern hemisphere
The climate in Slovenia is much more unsettled than in central Europe and offers varied seasons with deep winters and warm summers. It rarely gets really warm here and you can safely leave your swimwear at home. Due to the warmer temperatures the best time for traveling is from May to September. Winter athletes will find their favorite weather conditions from December to January.
› Duration of daylight and sunshine in Slovenia
hours of sunshine per day rainy days per month Precipitation in mm/day Relative humidity in % Water temperature Absolute humidity in g/m³ (approx.)
Temperature records of the last 44 years
The hottest temperature measured from 1975 to December 2019 was reported by the Ljubljana Bezigrad weather station. In August 2013 the record temperature of 40.2 °C was reported here. The hottest summer from July to September, based on all 2 weather stations in Slovenia below 2520 metres altitude, was recorded in 2011 with an average temperature of 21.1 °C. This average temperature will normally be measured every 4 to 6 hours, thus also including the nights. Normally, this value is 19.4 degrees Celsius. The average maximum daily temperature at that time was 27.5 °C.
The coldest day in these 44 years was reported by the weather station Ljubljana Bezigrad. Here the temperature dropped to -16.2 °C in January 2003. Ljubljana Bezigrad lies at an altitude of 298 meters above sea level. The coldest winter (January to March) was in 1985 with an average temperature of -1.1 °C. In Slovenia, it is usual to have about 4.2 degrees more at 3.1 °C for this three-month period.