Opatija weather in May (Istria, Croatia)

Planning a trip to Opatija in May? Here's what the weather might have in store during this month.

In May, Opatija generally has pleasant temperatures and high rainfall. Daytime temperatures hover around 20°C, while nights can cool down to about 12°C.

Opatija in May usually receives high rainfall, averaging around 141 mm for the month. When we look at the climate data from the last 30 years, we can expect around 15 days of rain.

The city usually sees around 234 hours of sunlight, indicating many sunny days.

If you're a fan of comfortable temperatures and drier conditions, May is a great time to visit. 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 Opatija climate page with graphs.

 

Opatija, monthly averages in May

Min Temperature 12°C  

Max Temperature 20°C  

Water Temperature 18°C *  

Chance of Rain 51%  

Precipitation 141 mm  

Rainy days 15 days  

Humidity 64% *  

Sunshine 234 hours *  

Percentage Sunshine 57% *  

* Data from: Rijeka, Croatia (7 KM, 4 Miles).

Where to go in Croatia in May

Find out more about the weather in Croatia in May 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 Opatija in May?

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 18°C there is no need to bring your swimwear.

What To Do

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

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

Interested in more climate information?

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