This page presents Slovenia's climate context for the current climatology, 1991-2020, derived from observed, historical data. Information should be used to build a strong understanding of current climate conditions in order to appreciate future climate scenarios and projected change. You can visualize data for the current climatology through spatial variation, the seasonal cycle, or as a time series. Analysis is available for both annual and seasonal data. Data presentation defaults to national-scale aggregation, however sub-national data aggregations can be accessed by clicking within a country, on a sub-national unit. Other historical climatologies can be selected from the Time Period dropdown list. Data for specific coordinates can be downloaded for in the Data Download page.
Three climate types are found in the territory of Slovenia: sub-Mediterranean, Alpine, and continental. Average annual temperature in the sub-Mediterranean climate type is 12°C, in the lower regions of central Slovenia it is between 8°C and 1°C, while at the highest peaks it never exceeds 0°C. Annual precipitation varies to a great extent, from 800 mm in the extreme north-eastern and 1000 mm in the extreme south-western part of the country, to over 3000 mm in the north-western part of the country.
- The average temperature has increased by 1.7°C in the period 1961 – 2011.
- Increase in the frequency and intensity of heave waves has been observed during the same period.
- Annual average precipitation in Slovenia decreased in the period 1961 – 2011 by approximately 160 mm. About half of the decrease was in spring months, while the decrease in other seasons was substantially smaller.
- In contrast with temperature trends, precipitation trends are more variable, particularly in terms of spatial variability.