Karlovac climate — normals and trends
Karlovac (Croatia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.8 °C and it receives 991 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 (21.0 °C on average) and the coldest is January (-0.1 °C). Rainfall peaks in November.
Karlovac averages 78 frost days, 18 hot days (≥ 30 °C) and 129 rainy days per year.
Karlovac has warmed by +2.8 °C between 1940 and 2025, or +0.33 °C per decade. This trend is statistically significant.
The number of frost days there went from about 97 to 59 per year over the period.
The hottest day of the period reached 39.7 °C (on 4 August 2017) and the coldest -30.4 °C (on 15 February 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
KarlovacKarlovac County
- coords
- 45.49°, 15.55°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.8°C
Average daily high
15.5°C
Average daily low
6.5°C
Annual rainfall
991mm
Sunshine / day
8.3h
Mean relative humidity
78%
Average peak wind
10.5km/h
Seasonal range
21.1°C
Frost days (< 0 °C)
78 d/yr
Hot days (≥ 30 °C)
18 d/yr
Rainy days (≥ 1 mm)
129 d/yr
Annual snowfall
103.3 cm
Average feels-like high
14.4 °C
Average feels-like low
4.8 °C
Average peak gust
26.9 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
12.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.8 °C
since 1940
+0.3 °C per decade · r² = 0.60 · 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
39.7 °C
4 August 2017
Coldest day
-30.4 °C
15 February 1940
Wettest day
66 mm
15 July 1972
Windiest day
38.5 km/h
10 February 1984
Strongest gust
94.7 km/h
10 February 1984
Hottest feels-like
41.5 °C
4 August 2017
Coldest feels-like
-34.9 °C
15 February 1940
Snowiest day
29.5 cm
19 November 1999
Sunniest day
14.8 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 | 8.0 °C | +4.7 °C | 65 mm | -1 mm |
| Feb | 6.4 °C | +0.4 °C | 76 mm | +6 mm |
| Mar | 14.2 °C | +3.2 °C | 141 mm | +66 mm |
| Apr | 18.6 °C | +2.7 °C | 81 mm | -3 mm |
| May | 20.3 °C | -0.1 °C | 111 mm | +19 mm |
| Jun | 29.2 °C | +5.0 °C | 9 mm | -80 mm |
| Jul | 28.4 °C | +1.9 °C | 143 mm | +60 mm |
| Aug | 27.3 °C | +1.0 °C | 55 mm | -20 mm |
| Sep | 23.3 °C | +1.4 °C | 79 mm | -7 mm |
| Oct | 16.7 °C | +0.7 °C | 104 mm | +19 mm |
| Nov | 11.0 °C | +1.5 °C | 109 mm | +9 mm |
| Dec | 5.8 °C | +1.1 °C | 57 mm | -28 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 Karlovac?
Karlovac has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 10.8 °C and it receives 991 mm of precipitation per year.
What is the hottest day ever recorded in Karlovac?
The hottest day measured in Karlovac between 1940 and 2025 was 4 August 2017, reaching 39.7 °C.
What is the coldest day in Karlovac?
The coldest day measured in Karlovac between 1940 and 2025 was 15 February 1940, at -30.4 °C.
Does it snow in Karlovac?
Yes. Karlovac gets on average 103.3 cm of snow per year and has around 78 frost days.
Has the climate of Karlovac warmed?
Yes: Karlovac warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Karlovac?
The wettest day measured in Karlovac between 1940 and 2025 was 15 July 1972, with 66 mm of rain in 24 hours.
What was the windiest day in Karlovac?
The windiest day measured in Karlovac between 1940 and 2025 was 10 February 1984, with winds reaching 38.5 km/h.
What is the warmest month in Karlovac?
The warmest month in Karlovac is July (21.0 °C on average); the coldest is January (-0.1 °C).
How much does it rain in Karlovac?
Karlovac receives on average 991 mm of precipitation per year, spread over about 129 rainy days.
Is it sunny in Karlovac?
Karlovac gets on average 8.3 hours of sunshine per day, roughly 3,030 hours per year over 1940-2025.
What is the biggest single-day snowfall in Karlovac?
The heaviest 24-hour snowfall measured in Karlovac between 1940 and 2025 was 19 November 1999, with 29.5 cm.
Are there tropical nights in Karlovac?
Yes: Karlovac has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Karlovac?
In Karlovac, between 1940 and 2025, the highest apparent temperature reached 41.5 °C on 4 August 2017, and the lowest was -34.9 °C on 15 February 1940.
Compare Karlovac with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Karlovac