Kostelj Weather in September

Thinking of visiting Kostelj in September? Expect pleasant temperatures reaching 22°C (72°F) during the day, dropping to 13°C (55°F) at night, and note that quite a bit of rainfall is likely.

Rainfall in Kostelj in September

Expect around 13 days of rain based on historical data, with 161 mm (6.3 in) average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Kostelj in September

September in Kostelj brings typical temperatures with highs around 22°C (72°F) and lows of 13°C (55°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. With lows of 13°C (55°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Kostelj in September

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

If your ideal day consists of dry skies and pleasant temperatures, July and August typically offer the best circumstances for Kostelj.

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For a detailed overview over the year and the best time to visit Croatia, check out our Kostelj's climate page.

Kostelj Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 22°C (72°F)  

Chance of Rain 43%  

Precipitation 161 mm (6.3 in)  

Rainy days 13 days  

Humidity 64% *  

Sunshine 202 hours *  

Percentage Sunshine 57% *  

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

What to Wear in Kostelj in September

For Kostelj in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Also bring a poncho, it will rain a lot! Waterproof everything you can. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Kostelj in September

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

Swimming

7/10

Camping

6/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Croatia, check out our Kostelj's climate page.

More climate data for Kostelj

Temperature Rainfall Sunshine Humidity

See the full Kostelj climate overview or explore weather in Croatia.