Kostelj weather in September (Primorsko-Goranska županija, Croatia)

How is September weather typically in Kostelj? See what weather conditions to anticipate this month with our guide.

Temperatures

The month of September in Kostelj typically brings pleasant temperatures and heavy rainfall. Daytime temperatures generally settle around 22°C, while nighttime can see a dip to about 13°C.

Precipitation

Kostelj in September usually receives heavy rainfall, averaging around 161 mm for the month. Historically, the month has about 13 days of rain.

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.

In case you lean more towards enjoying temperate temperatures and rain-free days 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 Kostelj climate page with graphs.

 

Kostelj, monthly averages in September

Min Temperature 13°C  

Max Temperature 22°C  

Chance of Rain 43%  

Precipitation 161 mm  

Rainy days 13 days  

Humidity 64% *  

Sunshine 202 hours *  

Percentage Sunshine 57% *  

* Data from: Rijeka, Croatia (26 KM, 16 Miles).

Where to go in Croatia in September

Find out more about the weather in Croatia 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 Kostelj, 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 Kostelj.

Our site offers climate and forecast data for every country in the world. Are you going to Croatia? On this website you can find historical weather averages for many cities in Croatia. 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.