Klagenfurt, where it's located

The climate of Klagenfurt is moderately continental, with cold winters, with temperatures often below freezing (0 °C or 32 °F), and warm summers.
Klagenfurt am Wörthersee is the capital of Carinthia and is located in the south of Austria, 450 meters (1,450 feet) above sea level, not far from the border with Slovenia.
The average temperature of the coldest month (January) is of -3.5 °C (26 °F), that of the warmest month (July) is of 19.2 °C (67 °F). Here are the average temperatures.
Klagenfurt - Average temperatures
Min (°C)-7-5-13811131394-1-5
Max (°C)04101520232625211461
Min (°F)192330374652555548393023
Max (°F)323950596873797770574334

Precipitation amounts to 890 millimeters (35 inches) per year: so, it is at an intermediate level. Winter is a fairly dry season, and precipitation in January is just 30 mm (1.2 in). The wettest month is July with 120 mm (4.7 in) of rain. The summer is the rainiest season due to afternoon thunderstorms. Here is the average precipitation.
Klagenfurt - Average precipitation

On average, there are around 1,870 sunshine hours per year. Here are the average sunshine hours per day.
Klagenfurt - Sunshine


Best Time

The best time to visit Klagenfurt runs from mid-May to mid-September, since it is the warmest and sunniest period of the year. Sometimes, it can be hot in July and August, while in other circumstances, nights can be cool or even a little cold even in these months, so it can be useful to bring a sweatshirt or sweater and a light jacket for the evening.