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

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

    Official Weather Alert ⚠️

  • Yellow Wind Warning - See hour by hour.

    • Temperatures

  • Until now, September 2025 in Grad Rovinj is slightly cooler than the historical average by -1.2 °C.

  • Expect cooler weather in the next days in Grad Rovinj with the forecast suggesting a temperature of 22 °C, lower than the historical average.

  • In general, the average temperature in Grad Rovinj at the beginning of September is 26 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.7 °C by the end of September.

    • Rain 🌧️

  • The climate of Grad Rovinj in September is notably wet, with an average of 15 rainy days, and a total of 87.7 mm of precipitation.

    • More

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

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

Average dry days
15
Dry days
Average rainy days
15
Rainy days
Average snowy days
0
Snow days
Average temperatures
24°/18°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
66 %
Avg humidity

Grad Rovinj Weather September

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

Temperatures trend during September in Grad Rovinj

See the weather trend as well as the moving average line

September weather in Grad Rovinj day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 26° /20° 0.3 mm 6
2 Sept. Sunny
Sunny
 26° /20° 3 mm 6
3 Sept. Patchy rain possible
Patchy rain possible
 26° /20° 1 mm 6
4 Sept. Sunny
Sunny
 26° /20° 0 mm 7
5 Sept. Sunny
Sunny
 27° /19° 3.1 mm 7
6 Sept. Sunny
Sunny
 25° /19° 2.4 mm 6
7 Sept. Sunny
Sunny
 26° /19° 0 mm 6
8 Sept. Sunny
Sunny
 26° /19° 3 mm 6
9 Sept. Sunny
Sunny
 25° /19° 8.4 mm 6
10 Sept. Sunny
Sunny
 24° /18° 23.1 mm 6
11 Sept. Sunny
Sunny
 25° /19° 3.5 mm 6
12 Sept. Overcast
Overcast
 24° /19° 13.6 mm 5
13 Sept. Partly cloudy
Partly cloudy
 22° /17° 0.8 mm 6
14 Sept. Partly cloudy
Partly cloudy
 22° /16° 3.8 mm 5
15 Sept. Partly cloudy
Partly cloudy
 22° /17° 0 mm 5
16 Sept. Moderate rain
Moderate rain
 24° /17° 7.4 mm 1.2
17 Sept. Patchy rain possible
Patchy rain possible
 22° /17° 1 mm 1.2
18 Sept. Sunny
Sunny
 23° /18° 0 mm 1.4
19 Sept. Sunny
Sunny
 25° /20° 0 mm 1.4
20 Sept. Sunny
Sunny
 25° /21° 0 mm 1.6
21 Sept. Sunny
Sunny
 25° /20° 0 mm 6
22 Sept. Patchy rain possible
Patchy rain possible
 25° /20° 0.3 mm 5
23 Sept. Patchy rain possible
Patchy rain possible
 22° /19° 4.3 mm 5
24 Sept. Patchy rain possible
Patchy rain possible
 18° /15° 2.6 mm 4
25 Sept. Sunny
Sunny
 19° /15° 0 mm 5
26 Sept. Patchy rain possible
Patchy rain possible
 20° /15° 1.4 mm 4
27 Sept. Patchy rain possible
Patchy rain possible
 21° /17° 1.6 mm 4
28 Sept. Moderate rain
Moderate rain
 20° /19° 14 mm 4
29 Sept. Patchy rain possible
Patchy rain possible
 19° /17° 2 mm 4
30 Sept. Partly cloudy
Partly cloudy
 21° /14° 0 mm 6
Next
Important Notice
Our weather forecast for Grad Rovinj 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 Rovinj forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Grad Rovinj weather in September vs August vs October

Compare September weather in Grad Rovinj with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
AugustSeptemberOctober
WeatherSunny
Sunny
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures28°/22°24°/18°20°/16°
Rainfall146 mm88 mm136 mm
Wind13.9 km/h17.2 km/h17.6 km/h
Humidity63%66%75%
Rainy days13 days15 days19 days
Dry days18 days15 days12 days

Planning a trip to Grad Rovinj? Discover the best time to visit

Grad Rovinj in September - FAQ

What are the expected maximum and minimum temperatures in Grad Rovinj during September?
During September, expect a variety of temperatures with highs around 24° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in Grad Rovinj during September?
Moderate rainfall is anticipated in Grad Rovinj during September, with a total of 87.7 mm spread over approximately 15 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Grad Rovinj during September?
The average wind speed in Grad Rovinj during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

Grad Rovinj water temperatures in September

The average water temperature of the Adriatic Sea near Grad Rovinj in September is 24.2 °C. Temperatures remain fairly consistent throughout the month.

What is the water temperature in Grad Rovinj in September?
The average water temperature in Grad Rovinj in September is 24.2 °C.
Can you swim in Grad Rovinj in September?
Ideal conditions for families and casual swimmers. You can stay in for long swims or reef explorations with no thermal protection required.

What to pack to Grad Rovinj in September?

As you prepare for your trip to Grad Rovinj 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 Rovinj, 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 Rovinj

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

UV exposure in Grad Rovinj during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Location coordinates Where is Grad Rovinj?

Get accurate weather forecasts for Grad Rovinj, located at latitude 45.083 and longitude 13.635. Stay updated with localized weather information tailored for Grad Rovinj.

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