Most people think of a normal body temperature as an oral temperature of 98.6Â°F (37Â°C) .
Ljubljana: Annual Weather Averages. July is the hottest month in Ljubljana with an average temperature of 20 Â°C (67 Â°F) and the coldest is January at -2 Â°C (29 Â°F) with the most daily sunshine hours at 10 in July. The wettest month is October with an average of 70mm of rain
Average monthly weather in Ljubljana, Slovenia. 1  Ljubjana, the capital of Slovenia can best be visited in late spring (May and June) or early spring (September or October). Summer in Ljubjana is from June to August, that is also the holliday season.