Gromnik Weather in September

Gromnik in September sees high daytime temperatures of 23°C (73°F) and nighttime lows of 16°C (61°F). As part of the rainy season, showers are frequent and often heavy. Budget around 196 mm (7.7 in) of rainfall for the month.

Rainfall in Gromnik in September

As part of the rainy season, Gromnik sees around 12 days of rain in September, with an average of 196 mm (7.7 in). The rain this month falls heavily when it arrives, so waterproofs are worth keeping handy.

Temperature in Gromnik in September

September in Gromnik sees highs of 23°C (73°F) and lows of 16°C (61°F) overnight. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 16°C (61°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Gromnik in September

With approximately 202 hours of sunshine, the days are filled with clear skies during the day. Rain typically falls in the afternoon or evening, keeping mornings and early parts of the day sunny.

Should you favor a climate that's both dry and comfortably warm, June and July typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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

Gromnik Temperature in September

Min Temperature 16°C (61°F)  

Max Temperature 23°C (73°F)  

Chance of Rain 40%  

Precipitation 196 mm (7.7 in)  

Rainy days 12 days  

Humidity 64% *  

Sunshine 202 hours *  

Percentage Sunshine 57% *  

* Data from: Rijeka, Croatia (27 KM, 16 Miles).

What to Wear in Gromnik in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Gromnik in September

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

Swimming

8/10

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 Gromnik's climate page.

More climate data for Gromnik

Temperature Rainfall Sunshine Humidity

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