Grožnjan weather in September (Istria, Croatia)

What should you pack for a trip to Grožnjan in September? Thinking about a visit? Explore this page for a full overview of the weather conditions this month.

Temperatures

In September, Grožnjan usually has high temperatures and high rainfall. Anticipate daytime highs near 24°C, and cooler nights with temperatures around 17°C.

Precipitation

Grožnjan in September usually receives high rainfall, averaging around 142 mm for the month. Expect around 11 days of rain based on historical data.

Average sunshine

The days are predominantly sunny, with an estimated total of around 223 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 May, June, July and August typically offer the most optimal weather. In contrast, January, February and December tend to have less optimal conditions.

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

 

Grožnjan, monthly averages in September

Min Temperature 17°C  

Max Temperature 24°C  

Chance of Rain 38%  

Precipitation 142 mm  

Rainy days 11 days  

Humidity 57% *  

Sunshine 223 hours *  

Percentage Sunshine *  

Data from: Portorož, Slovenia (18 KM, 11 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

Map not visible? Whoops sorry! Please refresh the page.

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 Grožnjan, 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

9/10

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

Interested in more climate information?

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

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.