Weather in Graz for September 2025
Moderate Risk of Rain Warning - See hour by hour.
Until now, September 2025 in Graz is slightly cooler than the historical average by -1.5 °C.
The forecast for the next days in Graz predicts a temperature of 19.4 °C, which is cooler than the historical average.
In general, the average temperature in Graz at the beginning of September is 26.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.9 °C by the end of September.
The climate of Graz in September is notably wet, with an average of 14 rainy days, and a total of 74.3 mm of precipitation.
Is September a good time to visit Graz? check out the best time to travel to Graz page.
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Graz Weather September
Temperatures trend during September in Graz
September weather in Graz day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 27° /14° | 0 mm | 7 | |
| 2 Sept. | Sunny | 28° /15° | 1 mm | 7 | |
| 3 Sept. |  Patchy rain possible | 27° /16° | 1.2 mm | 6 | |
| 4 Sept. | Sunny | 28° /15° | 0 mm | 7 | |
| 5 Sept. | Sunny | 26° /15° | 2.9 mm | 6 | |
| 6 Sept. | Sunny | 25° /14° | 1.7 mm | 6 | |
| 7 Sept. | Sunny | 26° /14° | 0 mm | 6 | |
| 8 Sept. | Sunny | 27° /13° | 0.2 mm | 7 | |
| 9 Sept. | Sunny | 24° /13° | 8.5 mm | 6 | |
| 10 Sept. | Sunny | 23° /13° | 10.8 mm | 5 | |
| 11 Sept. | Sunny | 23° /13° | 1.9 mm | 5 | |
| 12 Sept. | Sunny | 22° /12° | 12.2 mm | 5 | |
| 13 Sept. |  Thundery outbreaks possible | 20° /12° | 1.7 mm | 4 | |
| 14 Sept. |  Moderate rain | 17° /11° | 9.4 mm | 4 | |
| 15 Sept. |  Mist | 19° /10° | 0.5 mm | 5 | |
| 16 Sept. |  Heavy rain | 15° /13° | 34.5 mm | 0.1 | |
| 17 Sept. | Patchy rain possible | 19° /9° | 1.8 mm | 1.2 | |
| 18 Sept. |  Partly cloudy | 23° /11° | 0 mm | 1.2 | |
| 19 Sept. | Sunny | 25° /12° | 0 mm | 1.3 | |
| 20 Sept. | Sunny | 25° /13° | 0 mm | 1.6 | |
| 21 Sept. | Sunny | 25° /14° | 0 mm | 5 | |
| 22 Sept. | Sunny | 26° /15° | 0 mm | 5 | |
| 23 Sept. | Patchy rain possible | 21° /14° | 0.4 mm | 4 | |
| 24 Sept. | Patchy rain possible | 20° /11° | 1.4 mm | 3 | |
| 25 Sept. | Patchy rain possible | 16° /10° | 0.4 mm | 3 | |
| 26 Sept. | Moderate rain | 10° /8° | 14.3 mm | 2 | |
| 27 Sept. | Patchy rain possible | 15° /7° | 0.3 mm | 2 | |
| 28 Sept. | Sunny | 16° /3° | 0 mm | 3 | |
| 29 Sept. | Partly cloudy | 16° /6° | 0 mm | 4 | |
| 30 Sept. | Light rain shower | 18° /9° | 1.9 mm | 4 | |
| Next | |||||
Graz weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Sunny | Patchy rain possible |
| Temperatures | 27°/16° | 22°/12° | 16°/9° |
| Rainfall | 144 mm | 74 mm | 79 mm |
| Wind | 8.8 km/h | 8.5 km/h | 7 km/h |
| Humidity | 70% | 71% | 78% |
| Rainy days | 19 days | 14 days | 14 days |
| Dry days | 12 days | 16 days | 17 days |
Planning a trip to Graz? Discover the best time to visit
Guide for Graz in September
In Graz, Austria, September marks the transition from summer to autumn, bringing about noticeable changes in the weather. At the beginning of the month, the weather in Graz is generally pleasant, with mild temperatures and decreasing chances of rainfall.
The average temperature at the start of September hovers around 18°, making it an ideal time to explore the city's outdoor attractions and enjoy al fresco dining.
As the month progresses, the weather gradually begins to cool down, with average temperatures dropping to around 14° by the end of September. While the days remain relatively mild, the evenings start to become cooler, signaling the onset of autumn.
Additionally, there is a slight increase in the possibility of rainfall towards the end of the month, so it's advisable for visitors to pack an umbrella or light rain jacket.
Overall, September in Graz offers a pleasant transition from summer to autumn, allowing travelers to experience the city's charm amidst comfortable temperatures and beautiful scenery.
Whether strolling through the historic streets or indulging in the local culinary delights, visitors can enjoy the best of Graz's offerings while embracing the changing weather patterns.
Graz in September - FAQ
What to pack to Graz in September?
As you prepare for your trip to Graz 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 Graz, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long 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
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Graz
UV exposure in Graz during September
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Where is Graz?Get accurate weather forecasts for Graz, located at latitude 47.067 and longitude 15.45. Stay updated with localized weather information tailored for Graz.