Gradiska climate — normals and trends
Gradiska (Bosnia and Herzegovina) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 11.4 °C and it receives 813 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 (21.8 °C on average) and the coldest is January (-0.2 °C). Rainfall peaks in June.
Gradiska averages 73 frost days, 22 hot days (≥ 30 °C) and 124 rainy days per year.
Gradiska has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The number of frost days there went from about 92 to 54 per year over the period.
The hottest day of the period reached 39.8 °C (on 14 August 2003) and the coldest -25.5 °C (on 22 January 1940).
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
GradiskaRepublika Srpska
- coords
- 45.14°, 17.25°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.4°C
Average daily high
15.9°C
Average daily low
7.3°C
Annual rainfall
813mm
Sunshine / day
8.5h
Mean relative humidity
75%
Average peak wind
11.0km/h
Seasonal range
22.0°C
Frost days (< 0 °C)
73 d/yr
Hot days (≥ 30 °C)
22 d/yr
Rainy days (≥ 1 mm)
124 d/yr
Annual snowfall
63.1 cm
Average feels-like high
14.7 °C
Average feels-like low
5.5 °C
Average peak gust
27.3 km/h
Tropical nights (≥ 20 °C)
9 d/yr
Solar radiation
13.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.47 · 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
39.8 °C
14 August 2003
Coldest day
-25.5 °C
22 January 1940
Wettest day
58 mm
12 July 1972
Windiest day
35.3 km/h
6 November 1985
Strongest gust
87.8 km/h
6 November 1985
Hottest feels-like
41.8 °C
4 August 2017
Coldest feels-like
-30.5 °C
22 January 1940
Snowiest day
21.9 cm
4 February 1969
Sunniest day
14.9 h
21 June 2025
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 | 7.5 °C | +4.4 °C | 48 mm | -5 mm |
| Feb | 6.7 °C | +0.5 °C | 45 mm | -8 mm |
| Mar | 15.5 °C | +4.0 °C | 114 mm | +55 mm |
| Apr | 19.4 °C | +2.7 °C | 55 mm | -18 mm |
| May | 21.0 °C | -0.2 °C | 113 mm | +29 mm |
| Jun | 29.9 °C | +5.1 °C | 3 mm | -83 mm |
| Jul | 29.5 °C | +2.5 °C | 63 mm | -13 mm |
| Aug | 29.4 °C | +2.4 °C | 64 mm | -1 mm |
| Sep | 25.2 °C | +2.5 °C | 47 mm | -22 mm |
| Oct | 17.3 °C | +0.5 °C | 76 mm | +16 mm |
| Nov | 11.2 °C | +1.4 °C | 88 mm | +17 mm |
| Dec | 5.7 °C | +1.2 °C | 25 mm | -40 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 Gradiska?
Gradiska has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 11.4 °C and it receives 813 mm of precipitation per year.
What is the hottest day ever recorded in Gradiska?
The hottest day measured in Gradiska between 1940 and 2025 was 14 August 2003, reaching 39.8 °C.
What is the coldest day in Gradiska?
The coldest day measured in Gradiska between 1940 and 2025 was 22 January 1940, at -25.5 °C.
Does it snow in Gradiska?
Yes. Gradiska gets on average 63.1 cm of snow per year and has around 73 frost days.
Has the climate of Gradiska warmed?
Yes: Gradiska warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gradiska?
The wettest day measured in Gradiska between 1940 and 2025 was 12 July 1972, with 58 mm of rain in 24 hours.
What was the windiest day in Gradiska?
The windiest day measured in Gradiska between 1940 and 2025 was 6 November 1985, with winds reaching 35.3 km/h.
What is the warmest month in Gradiska?
The warmest month in Gradiska is July (21.8 °C on average); the coldest is January (-0.2 °C).
How much does it rain in Gradiska?
Gradiska receives on average 813 mm of precipitation per year, spread over about 124 rainy days.
Is it sunny in Gradiska?
Gradiska gets on average 8.5 hours of sunshine per day, roughly 3,103 hours per year over 1940-2025.
What is the biggest single-day snowfall in Gradiska?
The heaviest 24-hour snowfall measured in Gradiska between 1940 and 2025 was 4 February 1969, with 21.9 cm.
Are there tropical nights in Gradiska?
Yes: Gradiska has on average 9 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gradiska?
In Gradiska, between 1940 and 2025, the highest apparent temperature reached 41.8 °C on 4 August 2017, and the lowest was -30.5 °C on 22 January 1940.
Compare Gradiska with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Gradiska