The Krkonose Mountains are well known for their unsettled wheather conditions. Its typical oceanic character caters for moderate summers and precipitation-rich winters.

Rainfall:
Ca. 800mm per year, on the ridges ca. 1200-1400mm per year

Snow depth: between 100 and 300 cm

Temperatures: Annual average 0° to +6° C, the coldest month is January (-4,5° to –7,2° C), the hottest month is Juli (8,3° to 14° C)

Low 1: Natural avalanches very unlikely. Human triggered avalanches unlikely. Travel is generally safe. Normal caution advised.

Moderate 2: Natural avalanches unlikely. Human triggered avalanches possible. Use caution in steeper terrain on certain aspects.

Considerable 3: Natural avalanches possible. Human triggered avalanches probable. Be increasingly cautious in steeper terrain.

High 4: Natural and human triggered avalanches likely. Travel in avalanche terrain is not recommended.

Extreme 5: Widespread natural or human triggered avalanches certain. Travel in avalanche terrain should be avoided and confined to low angle terrain, well away from avalanche path runouts.