The climate of Jelenia Gora 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 southwestern Poland, 350 meters (1,150 feet) above sea level and at the foot of the "Giant Mountains" (or Karkonosze), near ski resorts such as Karpacz and Szklarska Poreba.
The average temperature of the coldest month (January) is of -1.8 °C (29 °F), that of the warmest month (July) is of 16.8 °C (62 °F). Here are the average temperatures.
Jelenia Gora - Average temperatures
Min (°C)-6-5-2169111073-1-5
Max (°C)2471318202323181373
Min (°F)212328344348525045373023
Max (°F)363945556468737364554537

Precipitation amounts to 695 millimeters (27.4 inches) per year: so, it is at an intermediate level. It ranges from 35 mm (1.4 in) in the driest months (January, February) to 110 mm (4.3 in) in the wettest (July). Here is the average precipitation.
Jelenia Gora - Average precipitation

On average, there are around 1,980 sunshine hours per year. Here are the average sunshine hours per day.
Jelenia Gora - Sunshine

Jelenia Gora

Best Time

The best time to visit Jelenia Gora 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.