Opatija weather in September (Istria, Croatia)

Thinking of visiting Opatija in September? Check the weather first! Discover if this is the best time for your journey with our detailed monthly weather breakdown.

Temperatures

Typically, September in Opatija includes pleasant temperatures and heavy rainfall. The temperature during the day can rise to approximately 22°C. At night, it falls to around 14°C.

Precipitation

Opatija in September falls under the rainy season with heavy rainfall, averaging around 215 mm for the month. On average, there are about 13 days with rain during this month.

Average sunshine

Expect sunny days throughout the month, with an estimated 202 hours of sunshine. Making it a pleasant time to visit Opatija.

Should you favor a climate that's both dry and comfortably warm May, June, July and August typically offer the most agreeable circumstances. On the other hand, January, February, March, October, November and December tend to be characterized by conditions that may not be as optimal.

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

 

Opatija, monthly averages in September

Min Temperature 14°C  

Max Temperature 22°C  

Water Temperature 24°C *  

Chance of Rain 42%  

Precipitation 215 mm  

Rainy days 13 days  

Humidity 64% *  

Sunshine 202 hours *  

Percentage Sunshine 57% *  

Data from: Rijeka, Croatia (7 KM, 4 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 Opatija, 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. With a water temperature of around 24°C this is a great month to swim so bring your swimwear.

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 Opatija.

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.