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Grad Rovinj (Rovinj)
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Weather in Grad Rovinj for September 2026

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 2026 in Grad Rovinj has been nearly identical to the historical average, with a temperature of 25 °C (showing only a slight deviation of 0.3 °C).

  • The forecast for the next days in Grad Rovinj predicts temperatures to be around 23 °C, close to the historical average.

  • In general, the average temperature in Grad Rovinj at the beginning of September is 26.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.6 °C by the end of September.

    • Rain 🌧️

  • Grad Rovinj in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 110.3 mm.

    • 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
11
Dry days
Average rainy days
19
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/18°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
68 %
Avg humidity

Grad Rovinj Weather September

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

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
 27° /21° 0.2 mm 7
2 Sept. Sunny
Sunny
 26° /21° 2.3 mm 6
3 Sept. Patchy rain possible
Patchy rain possible
 26° /21° 0.8 mm 6
4 Sept. Sunny
Sunny
 26° /21° 0 mm 7
5 Sept. Sunny
Sunny
 27° /20° 2.4 mm 7
6 Sept. Sunny
Sunny
 26° /19° 1.8 mm 6
7 Sept. Sunny
Sunny
 27° /20° 0 mm 6
8 Sept. Sunny
Sunny
 26° /20° 2.3 mm 6
9 Sept. Sunny
Sunny
 26° /20° 6.9 mm 5
10 Sept. Sunny
Sunny
 24° /18° 32.3 mm 5
11 Sept. Sunny
Sunny
 24° /19° 6.2 mm 5
12 Sept. Overcast
Overcast
 24° /18° 10.2 mm 6
13 Sept. Partly cloudy
Partly cloudy
 23° /17° 0.6 mm 6
14 Sept. Partly cloudy
Partly cloudy
 23° /17° 2.9 mm 5
15 Sept. Partly cloudy
Partly cloudy
 23° /17° 0 mm 5
16 Sept. Partly cloudy
Partly cloudy
 23° /17° 4 mm 5
17 Sept. Partly cloudy
Partly cloudy
 22° /17° 4.5 mm 4
18 Sept. Partly cloudy
Partly cloudy
 23° /17° 3.1 mm 5
19 Sept. Patchy rain possible
Patchy rain possible
 24° /18° 2.1 mm 5
20 Sept. Partly cloudy
Partly cloudy
 24° /18° 0.2 mm 6
21 Sept. Overcast
Overcast
 24° /19° 0 mm 4.3
22 Sept. Sunny
Sunny
 22° /16° 0 mm 4.6
23 Sept. Sunny
Sunny
 21° /14° 0 mm 4.7
24 Sept. Overcast
Overcast
 21° /16° 0.2 mm 4.3
25 Sept. Sunny
Sunny
 22° /16° 0.8 mm 6
26 Sept. Patchy rain possible
Patchy rain possible
 21° /17° 0.8 mm 5
27 Sept. Sunny
Sunny
 23° /17° 0 mm 6
28 Sept. Overcast
Overcast
 24° /19° 0 mm 6
29 Sept. Overcast
Overcast
 24° /20° 0 mm 5
30 Sept. Patchy rain possible
Patchy rain possible
 23° /18° 1.6 mm 5
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
‹
›

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
Temperatures27°/21°23°/18°19°/15°
Rainfall129 mm110 mm139 mm
Wind14.5 km/h16.4 km/h17.5 km/h
Humidity63%68%74%
Rainy days15 days19 days22 days
Dry days16 days11 days9 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 23° and lows near 18°, suitable for diverse activities and preferences.

How much rainfall should be expected in Grad Rovinj during September?
Significant rainfall exceeding 110.3 mm is expected in Grad Rovinj during September, occurring over more than 19 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Grad Rovinj during September?
The average wind speed in Grad Rovinj during September is 16 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 25.2 °C. At the beginning of September temperatures are around 25.6 °C; by the end of the month they get cooler and reach 24.1 °C.

What is the water temperature in Grad Rovinj in September?
The average water temperature in Grad Rovinj in September is 25.2 °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.

September rainfall patterns in Grad Rovinj

Explore the daily rainfall trends and prepare for Grad Rovinjs September weather 💧
Typically, Grad Rovinj has 19 rainy days in September with a total of 110.3 mm of rainfall.

UV exposure in Grad Rovinj during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

What to pack to Grad Rovinj in September?

🌦️ Mild · highs around 23 °C, frequent showers

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.

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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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