Jajce climate — normals and trends
Jajce (Bosnia and Herzegovina) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.2 °C and it receives 1,005 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 (17.8 °C on average) and the coldest is January (-2.1 °C). Rainfall peaks in May.
Jajce averages 111 frost days, 5 hot days (≥ 30 °C) and 144 rainy days per year.
Jajce has warmed by +3.0 °C between 1940 and 2025, or +0.36 °C per decade. This trend is statistically significant.
The number of frost days there went from about 132 to 90 per year over the period.
The hottest day of the period reached 35.6 °C (on 10 August 2017) and the coldest -29.6 °C (on 4 January 1979).
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
JajceFederation of Bosnia and Herzegovina
- coords
- 44.34°, 17.27°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.2°C
Average daily high
13.0°C
Average daily low
3.8°C
Annual rainfall
1,005mm
Sunshine / day
8.6h
Mean relative humidity
78%
Average peak wind
11.5km/h
Seasonal range
19.9°C
Frost days (< 0 °C)
111 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
144 d/yr
Annual snowfall
189.4 cm
Average feels-like high
11.1 °C
Average feels-like low
1.5 °C
Average peak gust
37.1 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
13.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.0 °C
since 1940
+0.4 °C per decade · r² = 0.62 · 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
35.6 °C
10 August 2017
Coldest day
-29.6 °C
4 January 1979
Wettest day
95 mm
24 July 1976
Windiest day
36.4 km/h
10 April 1973
Strongest gust
123.8 km/h
29 October 1959
Hottest feels-like
36.9 °C
26 June 2025
Coldest feels-like
-35.1 °C
4 January 1979
Snowiest day
36.6 cm
4 February 1969
Sunniest day
14.7 h
20 June 2022
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 6.0 °C | +4.2 °C | 48 mm | -29 mm |
| Feb | 6.3 °C | +2.6 °C | 63 mm | -16 mm |
| Mar | 11.9 °C | +4.2 °C | 167 mm | +82 mm |
| Apr | 15.1 °C | +2.6 °C | 102 mm | +6 mm |
| May | 17.8 °C | +0.6 °C | 86 mm | -16 mm |
| Jun | 27.0 °C | +6.3 °C | 4 mm | -86 mm |
| Jul | 26.9 °C | +3.8 °C | 75 mm | -1 mm |
| Aug | 25.4 °C | +1.9 °C | 53 mm | -9 mm |
| Sep | 22.7 °C | +3.2 °C | 40 mm | -32 mm |
| Oct | 13.5 °C | -0.9 °C | 75 mm | +2 mm |
| Nov | 10.2 °C | +2.0 °C | 138 mm | +38 mm |
| Dec | 6.5 °C | +3.1 °C | 33 mm | -61 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 Jajce?
Jajce has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.2 °C and it receives 1,005 mm of precipitation per year.
What is the hottest day ever recorded in Jajce?
The hottest day measured in Jajce between 1940 and 2025 was 10 August 2017, reaching 35.6 °C.
What is the coldest day in Jajce?
The coldest day measured in Jajce between 1940 and 2025 was 4 January 1979, at -29.6 °C.
Does it snow in Jajce?
Yes. Jajce gets on average 189.4 cm of snow per year and has around 111 frost days.
Has the climate of Jajce warmed?
Yes: Jajce warmed by +3.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Jajce?
The wettest day measured in Jajce between 1940 and 2025 was 24 July 1976, with 95 mm of rain in 24 hours.
What was the windiest day in Jajce?
The windiest day measured in Jajce between 1940 and 2025 was 10 April 1973, with winds reaching 36.4 km/h.
What is the warmest month in Jajce?
The warmest month in Jajce is July (17.8 °C on average); the coldest is January (-2.1 °C).
How much does it rain in Jajce?
Jajce receives on average 1,005 mm of precipitation per year, spread over about 144 rainy days.
Is it sunny in Jajce?
Jajce gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.
What is the biggest single-day snowfall in Jajce?
The heaviest 24-hour snowfall measured in Jajce between 1940 and 2025 was 4 February 1969, with 36.6 cm.
Are there tropical nights in Jajce?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Jajce.
What was the most extreme apparent temperature in Jajce?
In Jajce, between 1940 and 2025, the highest apparent temperature reached 36.9 °C on 26 June 2025, and the lowest was -35.1 °C on 4 January 1979.
Compare Jajce with another city
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Nearby cities
The climate around Jajce