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Grad Rijeka (Rijeka)
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Weather in Grad Rijeka for September 2025

Your guide to Grad Rijeka weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Grad Rijeka at the beginning of September is 25.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.4 °C by the end of September.

    • Rain 🌧️

  • Grad Rijeka in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 108.5 mm.

    • More

  • Is September a good time to visit Grad Rijeka? check out the best time to travel to Grad Rijeka page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
14
Dry days
Average rainy days
16
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/15°
Temperatures
Average wind speed
14 km/h
Avg max wind
Average humidity
70 %
Avg humidity

Grad Rijeka in September average weather

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Partly cloudy
26°
2
Sunny
27°
3
Overcast
26°
4
Sunny
25°
5
Sunny
25°
6
Sunny
24°
7
Sunny
26°
8
Sunny
25°
9
Sunny
24°
10
Sunny
26°
11
Sunny
24°
12
Sunny
22°
13
Partly cloudy
18°
14
Partly cloudy
20°
15
Partly cloudy
19°
16
Sunny
21°
17
Partly cloudy
19°
18
Partly cloudy
21°
19
Light rain shower
21°
20
Patchy rain possible
20°
21
Light rain shower
22°
22
Light rain shower
21°
23
Light rain shower
19°
24
Light drizzle
17°
25
Patchy rain possible
19°
26
Sunny
22°
27
Overcast
22°
28
Sunny
21°
29
Sunny
21°
30
Partly cloudy
21°
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Temperatures trend during September in Grad Rijeka

See the weather trend as well as the moving average line
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September weather day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
 26° /17° 0 mm 7
2 Sept. Sunny
Sunny
 27° /18° 0 mm 7
3 Sept. Overcast
Overcast
 26° /18° 0 mm 6
4 Sept. Sunny
Sunny
 25° /17° 0 mm 7
5 Sept. Sunny
Sunny
 25° /17° 2.4 mm 6
6 Sept. Sunny
Sunny
 24° /16° 0.2 mm 6
7 Sept. Sunny
Sunny
 26° /16° 0 mm 7
8 Sept. Sunny
Sunny
 25° /17° 3 mm 6
9 Sept. Sunny
Sunny
 24° /16° 10.1 mm 6
10 Sept. Sunny
Sunny
 26° /15° 0.3 mm 6
11 Sept. Sunny
Sunny
 24° /16° 0.1 mm 6
12 Sept. Sunny
Sunny
 22° /15° 27 mm 5
13 Sept. Partly cloudy
Partly cloudy
 18° /13° 4.3 mm 5
14 Sept. Partly cloudy
Partly cloudy
 20° /13° 1.2 mm 5
15 Sept. Partly cloudy
Partly cloudy
 19° /12° 1.4 mm 5
16 Sept. Sunny
Sunny
 21° /13° 0.6 mm 5
17 Sept. Partly cloudy
Partly cloudy
 19° /13° 0.3 mm 5
18 Sept. Partly cloudy
Partly cloudy
 21° /13° 0 mm 5
19 Sept. Light rain shower
Light rain shower
 21° /15° 6.4 mm 5
20 Sept. Patchy rain possible
Patchy rain possible
 20° /15° 0.2 mm 5
21 Sept. Light rain shower
Light rain shower
 22° /14° 3.2 mm 6
22 Sept. Light rain shower
Light rain shower
 21° /15° 10.1 mm 6
23 Sept. Light rain shower
Light rain shower
 19° /14° 4 mm 5
24 Sept. Light drizzle
Light drizzle
 17° /13° 17.3 mm 4
25 Sept. Patchy rain possible
Patchy rain possible
 19° /13° 5.1 mm 4
26 Sept. Sunny
Sunny
 22° /15° 2.8 mm 6
27 Sept. Overcast
Overcast
 22° /17° 6.6 mm 5
28 Sept. Sunny
Sunny
 21° /13° 2 mm 5
29 Sept. Sunny
Sunny
 21° /12° 0 mm 6
30 Sept. Partly cloudy
Partly cloudy
 21° /11° 0 mm 6
Next
Important Notice
Our weather forecast for Grad Rijeka in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Grad Rijeka forecast closer to your planned date for the most up-to-date weather information.

Guide for Grad Rijeka in September

In September, Rijeka, Croatia experiences a transition from the warm summer weather to the cooler temperatures of autumn. At the beginning of the month, Rijeka typically enjoys pleasant temperatures around 24°, with plenty of sunshine and minimal rainfall.

The Adriatic Sea also remains warm, making it an ideal time for beach activities and water sports.

As the month progresses, the weather in Rijeka gradually cools down. By the end of September, temperatures tend to drop to around 20°, signaling the arrival of autumn. While the sea remains relatively warm, the city experiences more frequent rainfall and slightly overcast skies.

However, the weather is still generally mild, making it a great time to explore the city's cultural attractions and enjoy outdoor activities.

Overall, September in Rijeka offers a mix of summer and autumn weather, providing visitors with the opportunity to enjoy the last remnants of summer while also experiencing the changing seasons.

Whether you prefer beach days or sightseeing, Rijeka's September weather caters to a variety of interests.

Have you visited Grad Rijeka in September? Share your experience by writing a review.

Grad Rijeka in September - FAQ

Is September a good time to visit Grad Rijeka?
Yes, September is a good time to traveling to Grad Rijeka, read more about the best time to visit Grad Rijeka.
What are the expected maximum and minimum temperatures in Grad Rijeka during September?
During September, expect a variety of temperatures with highs around 22° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Grad Rijeka during September?
Significant rainfall exceeding 108.5 mm is expected in Grad Rijeka during September, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Grad Rijeka during September?
The average wind speed in Grad Rijeka during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Grad Rijeka in September?

As you prepare for your trip to Grad Rijeka in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Grad Rijeka, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • Umbrellas/Raincoats: For rainy days

September rainfall patterns in Grad Rijeka

Explore the daily rainfall trends and prepare for Grad Rijekas September weather 💧

UV exposure in Grad Rijeka during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Get accurate weather forecasts for Grad Rijeka, located at latitude 45.327 and longitude 14.442. Stay updated with localized weather information tailored for Grad Rijeka.

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