Slunj Temperature by Month
The average annual maximum temperature in Slunj, Karlovac county, Croatia is 17°C (63°F), with daytime highs ranging from 6°C (43°F) in January to 28°C (82°F) in July. This page covers monthly averages, day-night differences, and how Slunj compares to cities worldwide.
Slunj Monthly Temperatures
The climate in Slunj is dynamic, ranging widely from chilly in winter to comfortable in summer. Nights are significantly colder, with lows dropping from 16°C (61°F) in July to -2°C (28°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Slunj by month:
Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. July, the warmest month of the year, receives 310 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Slunj vs Croatia
The map below shows the annual temperature across Croatia. You can also select individual months if you want to compare a specific time of year.
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Slunj vs World: Temperature Compared
Slunj's average annual maximum temperature is 17°C (63°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Slunj's weather — including monthly rainfall, sunshine hours, and humidity — visit our Slunj climate page.
