Iași (Iaşi)
September
Weather in Iași for September 2025
Your guide to Iași weather in September - trends and predictions
Until now, September 2025 in Iași has been nearly identical to the historical average, with a temperature of 28.6 °C (showing only a slight deviation of 0.5 °C).
Expect cooler weather in the next days in Iași with the forecast suggesting a temperature of 24.2 °C, lower than the historical average.
In general, the average temperature in Iași at the beginning of September is 30 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 23.9 °C by the end of September.
Iași experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 44.5 mm.
Temperatures
Rain 🌧️
23
Dry days
7
Rainy days
0
Snow days
26°/14°
Temperatures
18 km/h
Avg max wind
51 %
Avg humidity
Iași Weather September
Move between months or click on a day
Temperatures trend during September in Iași
See the weather trend as well as the moving average line
September weather in Iași day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 31° /17° | 0.6 mm | 7 | |
| 2 Sept. |  Sunny | 33° /16° | 0 mm | 8 | |
| 3 Sept. |  Light rain shower | 33° /16° | 0.9 mm | 7 | |
| 4 Sept. | Light rain shower | 26° /15° | 0.3 mm | 6 | |
| 5 Sept. | Partly cloudy | 29° /15° | 0 mm | 7 | |
| 6 Sept. |  Overcast | 29° /14° | 0.5 mm | 7 | |
| 7 Sept. | Sunny | 29° /14° | 0 mm | 7 | |
| 8 Sept. | Sunny | 28° /13° | 0 mm | 7 | |
| 9 Sept. | Sunny | 29° /14° | 0.2 mm | 7 | |
| 10 Sept. | Partly cloudy | 28° /14° | 0 mm | 7 | |
| 11 Sept. | Partly cloudy | 26° /14° | 0.6 mm | 6 | |
| 12 Sept. | Partly cloudy | 23° /14° | 5.3 mm | 5 | |
| 13 Sept. | Partly cloudy | 28° /14° | 0 mm | 7 | |
| 14 Sept. | Partly cloudy | 26° /14° | 4.9 mm | 6 | |
| 15 Sept. | Patchy rain possible | 23° /13° | 3.5 mm | 5 | |
| 16 Sept. | Partly cloudy | 22° /13° | 19.1 mm | 6 | |
| 17 Sept. |  Moderate rain | 16° /13° | 13.1 mm | 0.2 | |
| 18 Sept. | Partly cloudy | 19° /11° | 0 mm | 0.9 | |
| 19 Sept. | Partly cloudy | 22° /10° | 0 mm | 1.1 | |
| 20 Sept. | Partly cloudy | 26° /16° | 0 mm | 1.6 | |
| 21 Sept. | Sunny | 28° /15° | 0 mm | 6 | |
| 22 Sept. | Sunny | 28° /13° | 0 mm | 6 | |
| 23 Sept. | Sunny | 29° /14° | 0 mm | 6 | |
| 24 Sept. | Sunny | 30° /14° | 0 mm | 6 | |
| 25 Sept. | Partly cloudy | 21° /13° | 0 mm | 5 | |
| 26 Sept. | Sunny | 21° /12° | 0 mm | 5 | |
| 27 Sept. | Sunny | 23° /10° | 0 mm | 5 | |
| 28 Sept. | Sunny | 26° /11° | 0 mm | 5 | |
| 29 Sept. | Sunny | 26° /12° | 0 mm | 5 | |
| 30 Sept. | Sunny | 20° /10° | 0 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Iași 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 Iași forecast closer to your planned date for the most up-to-date weather information.
Change Month
Iași in September - FAQ
What are the expected maximum and minimum temperatures in Iași during September?
Enjoy moderate daytime temperatures of up to 26° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Iași during September?
In September, Iași can expect light to moderate rainfall, totaling 44.5 mm across approximately 7 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Iași during September?
The average wind speed in Iași during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Iași
Explore the daily rainfall trends and prepare for Iașis September weather 💧
UV exposure in Iași during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Provinces in Iași
Select a province for an accurate weather forecast
Top locations in Iași
Select a location for an accurate weather forecast
More Locations Quick links
More Iași weather pages
You are here
Where is Iași?Get accurate weather forecasts for Iași, located at latitude 47.167 and longitude 27.6. Stay updated with localized weather information tailored for Iași.
Found a mistake?
We appreciate your attention to details. Tell us here.