Ilirska Bistrica weather in September (Notranjska, Slovenia)

Can you expect sunny skies in Ilirska Bistrica in September? Find out what kind of weather to expect during this month.

Temperatures

During September, Ilirska Bistrica usually has pleasant temperatures and heavy rainfall. The daytime often sees temperatures reaching 21°C, but nighttime brings a cool-down to 12°C.

Precipitation

Ilirska Bistrica in September falls under the rainy season with heavy rainfall, averaging around 200 mm for the month. This month experiences about 13 days of rain according to historical data.

Average sunshine

The days are predominantly sunny, with an estimated total of around 202 hours of sunshine. These sun-filled days are perfect for spending time outside. Whether it's playing sports, visiting a park, or going for a bike ride.

If your ideal day consists of dry skies and moderate temperatures May, June, July and August generally stand out with the best circumstances. While January, February, March, October, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Ilirska Bistrica climate page with graphs.

 

Ilirska Bistrica, monthly averages in September

Min Temperature 12°C  

Max Temperature 21°C  

Chance of Rain 43%  

Precipitation 200 mm  

Rainy days 13 days  

Humidity 64% *  

Sunshine 202 hours *  

Percentage Sunshine 57% *  

* Data from: Rijeka, Croatia (28 KM, 17 Miles).

Where to go in Slovenia in September

Find out more about the weather in Slovenia and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Ilirska Bistrica, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Camping

6/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Ilirska Bistrica.

Our site offers climate and forecast data for every country in the world. Are you going to Slovenia? On this website you can find historical weather averages for many cities in Slovenia. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.