Idrija weather in September (Slovenia)

What can you expect from the weather in Idrija during September? Wondering if it's the right time to visit? Browse this page for a comprehensive overview of the weather conditions for that month.

In September, Idrija typically experiences pleasant temperatures and heavy rainfall. Daytime temperatures hover around 21°C, while nights can cool down to about 11°C.

Idrija in September falls under the rainy season with heavy rainfall, averaging around 185 mm for the month. Typically around 13 days of rainfall is expected.

The area enjoys a balanced 182 hours of sunlight. Ensuring it's neither too overcast nor too sunny.

In case you lean more towards enjoying temperate temperatures and rain-free days May, June, July and August typically offer the most optimal weather. In contrast, January, February, March, November and December tend to have less optimal conditions.

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

 

Idrija, monthly averages in September

Min Temperature 11°C  

Max Temperature 21°C  

Chance of Rain 44%  

Precipitation 185 mm  

Rainy days 13 days  

Humidity 72% *  

Sunshine 182 hours *  

Percentage Sunshine *  

* Data from: Ljubljana, Slovenia (37 KM, 23 Miles).

Where to go in Slovenia in September

Find out more about the weather in Slovenia in September and which places have the best weather 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 Idrija in September?

For visitors traveling to Idrija, 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 in September.

Swimming

6/10

Camping

6/10

Interested in more climate information?

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

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 climate conditions. Find out where to go with our weather planner.