Jablonec nad Nisou climate — normals and trends
Jablonec nad Nisou (Czechia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.4 °C and it receives 1,033 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (16.0 °C on average) and the coldest is January (-3.7 °C). Rainfall peaks in July.
Jablonec nad Nisou averages 129 frost days, 1 hot days (≥ 30 °C) and 172 rainy days per year.
Jablonec nad Nisou has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The number of frost days there went from about 149 to 109 per year over the period.
The hottest day of the period reached 32.9 °C (on 27 July 1983) and the coldest -28.7 °C (on 9 February 1956).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
Jablonec nad NisouLiberec Region
- coords
- 50.72°, 15.17°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.4°C
Average daily high
9.9°C
Average daily low
3.0°C
Annual rainfall
1,033mm
Sunshine / day
7.6h
Mean relative humidity
82%
Average peak wind
15.5km/h
Seasonal range
19.7°C
Frost days (< 0 °C)
129 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
172 d/yr
Annual snowfall
162.1 cm
Average feels-like high
7.3 °C
Average feels-like low
0.0 °C
Average peak gust
37.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.48 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
32.9 °C
27 July 1983
Coldest day
-28.7 °C
9 February 1956
Wettest day
72 mm
11 August 2017
Windiest day
44.8 km/h
4 January 1976
Strongest gust
129.6 km/h
18 January 2007
Hottest feels-like
35.5 °C
22 August 1943
Coldest feels-like
-34.6 °C
9 February 1956
Snowiest day
18.8 cm
23 April 1980
Sunniest day
16.0 h
25 June 1994
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 1.6 °C | +3.1 °C | 88 mm | +9 mm |
| Feb | 1.0 °C | +0.9 °C | 18 mm | -52 mm |
| Mar | 8.9 °C | +4.5 °C | 44 mm | -27 mm |
| Apr | 13.7 °C | +3.5 °C | 49 mm | -21 mm |
| May | 14.7 °C | -0.6 °C | 87 mm | -9 mm |
| Jun | 21.6 °C | +3.0 °C | 91 mm | -17 mm |
| Jul | 21.2 °C | +0.9 °C | 139 mm | +17 mm |
| Aug | 21.8 °C | +1.6 °C | 94 mm | -12 mm |
| Sep | 17.5 °C | +1.5 °C | 94 mm | +14 mm |
| Oct | 9.6 °C | -1.0 °C | 106 mm | +36 mm |
| Nov | 4.9 °C | +0.8 °C | 58 mm | -19 mm |
| Dec | 2.4 °C | +2.4 °C | 38 mm | -47 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Jablonec nad Nisou?
Jablonec nad Nisou has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.4 °C and it receives 1,033 mm of precipitation per year.
What is the hottest day ever recorded in Jablonec nad Nisou?
The hottest day measured in Jablonec nad Nisou between 1940 and 2025 was 27 July 1983, reaching 32.9 °C.
What is the coldest day in Jablonec nad Nisou?
The coldest day measured in Jablonec nad Nisou between 1940 and 2025 was 9 February 1956, at -28.7 °C.
Does it snow in Jablonec nad Nisou?
Yes. Jablonec nad Nisou gets on average 162.1 cm of snow per year and has around 129 frost days.
Has the climate of Jablonec nad Nisou warmed?
Yes: Jablonec nad Nisou warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Jablonec nad Nisou?
The wettest day measured in Jablonec nad Nisou between 1940 and 2025 was 11 August 2017, with 72 mm of rain in 24 hours.
What was the windiest day in Jablonec nad Nisou?
The windiest day measured in Jablonec nad Nisou between 1940 and 2025 was 4 January 1976, with winds reaching 44.8 km/h.
What is the warmest month in Jablonec nad Nisou?
The warmest month in Jablonec nad Nisou is July (16.0 °C on average); the coldest is January (-3.7 °C).
How much does it rain in Jablonec nad Nisou?
Jablonec nad Nisou receives on average 1,033 mm of precipitation per year, spread over about 172 rainy days.
Is it sunny in Jablonec nad Nisou?
Jablonec nad Nisou gets on average 7.6 hours of sunshine per day, roughly 2,774 hours per year over 1940-2025.
What is the biggest single-day snowfall in Jablonec nad Nisou?
The heaviest 24-hour snowfall measured in Jablonec nad Nisou between 1940 and 2025 was 23 April 1980, with 18.8 cm.
Are there tropical nights in Jablonec nad Nisou?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Jablonec nad Nisou.
What was the most extreme apparent temperature in Jablonec nad Nisou?
In Jablonec nad Nisou, between 1940 and 2025, the highest apparent temperature reached 35.5 °C on 22 August 1943, and the lowest was -34.6 °C on 9 February 1956.
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Nearby cities
The climate around Jablonec nad Nisou