Sibiu, where it's located

The climate of Sibiu is moderately continental, characterized by cold winters, with temperatures often below freezing (0 °C or 32 °F), and mild or pleasantly warm summers.
The city is located in the center of Romania, in Transylvania, at an altitude of 400 meters (1,300 feet).
The average temperature of the coldest month (January) is of -2.6 °C (27 °F), that of the warmest month (July) is of 19.8 °C (68 °F). Here are the average temperatures.
Sibiu - Average temperatures
Min (°C)-7-6-14912131394-1-5
Max (°C)24101621242626211693
Min (°F)192130394854555548393023
Max (°F)363950617075797970614837

Precipitation amounts to 630 millimeters (24.8 inches) per year: so, it is at an intermediate level. It ranges from 25 mm (1 in) in the driest month (January) to 95 mm (3.7 in) in the wettest (June). Here is the average precipitation.
Sibiu - Average precipitation

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


Best Time

The best time to visit Sibiu 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.