Hreljin Weather in September

Hreljin in September averages 21°C (70°F) during the day and 13°C (55°F) at night. September is part of the rainy season, so frequent rainfall is typical.

Rainfall in Hreljin in September

Hreljin is in the rainy season in September, with rain on around 13 days and an average of 173 mm (6.8 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.

Temperature in Hreljin in September

In September, Hreljin sees pleasant temperatures, with highs of 21°C (70°F). Nights drop to around 13°C (55°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 13°C (55°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 Hreljin in September

The month enjoys around 202 hours of sunshine. The wet weather tends to wait until afternoon or evening to arrive, leaving the first half of most days dry and sunny.

Average water temperature in September

The water is 24°C (75°F) this month — warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.

For Hreljin itself, July and August generally stand out with the best 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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Hreljin Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 21°C (70°F)  

Water Temperature 24°C (75°F) *  

Chance of Rain 42%  

Precipitation 173 mm (6.8 in)  

Rainy days 13 days  

Humidity 64% *  

Sunshine 202 hours *  

Percentage Sunshine 57% *  

* Data from: Rijeka, Croatia (16 KM, 10 Miles).

What to Wear in Hreljin in September

For Hreljin 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. Expect water temperatures of around 24°C (75°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Hreljin 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 Hreljin's climate page.

More climate data for Hreljin

Temperature Rainfall Sunshine Humidity Water Temp

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