Climate Insights for Jablonec nad Nisou

The climate in Jablonec nad Nisou is cool. The average annual temperature is 8°C and approximately 1089mm of precipitation falls per year. Jablonec nad Nisou receives a notable amount of rainfall throughout the year, including during its driest month. Jablonec nad Nisou is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are January, February, December, when temperatures can drop to -4°C. Snowfall occurs from January to December, with around 191cm accumulating over the season.

Temperatures in Jablonec nad Nisou vary considerably across the year, with a 26°C difference between the coldest and warmest months. August is the warmest month, though highs remain moderate at 22°C with a mean of 17°C. The coldest month is January, when overnight lows fall to -4°C and the daily average is -2°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.

Jablonec nad Nisou is a moderately rainy area, receiving approximately 1089mm of precipitation annually, which averages out to around 91mm per month. The wettest month is August, averaging 125mm of rainfall. June and July also tend to see above-average precipitation. The driest month is April, with just 64mm. That's 61mm less than August, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 191cm accumulating over the season. January typically sees the most snow at around 64cm.

Jablonec nad Nisou is relatively calm, with an average annual wind speed of 10km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 12km/h in winter, 11km/h in spring, 9km/h in summer, 10km/h in autumn.

It is currently summer in Jablonec nad Nisou, which began on June 21, 2026. Jablonec nad Nisou is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 22°C, while the coldest stretch bottoms out in January near -4°C. Autumn is next, beginning on September 23, 2026 (8 days from now).

The table below shows monthly climate averages for Jablonec nad Nisou based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.