Iaşi
September
Weather in Iaşi for September 2026
Your guide to Iaşi weather in September - trends and predictions
Until now, September 2026 in Iaşi is slightly cooler than the historical average by 1.3 °C.
The forecast for the next days in Iaşi predicts a temperature of 22.6 °C, which is cooler than the historical average.
In general, the average temperature in Iaşi at the beginning of September is 29.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.6 °C by the end of September.
With an average of 5 rainy days, Iaşi experiences minimal rainfall in September.
Temperatures
Rain 🌧️
25
Dry days
5
Rainy days
0
Snow days
26°/13°
Temperatures
18 km/h
Avg max wind
52 %
Avg humidity
Iaşi Weather September
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Temperatures trend during September in Iaşi
See the weather trend as well as the moving average line
September weather in Iaşi day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 30° /17° | 0.6 mm | 6 | |
| 2 Sept. |  Sunny | 32° /16° | 0.6 mm | 7 | |
| 3 Sept. | Sunny | 32° /16° | 1.4 mm | 7 | |
| 4 Sept. |  Overcast | 27° /15° | 0.2 mm | 5 | |
| 5 Sept. | Partly cloudy | 30° /15° | 0.4 mm | 7 | |
| 6 Sept. | Overcast | 27° /14° | 0.4 mm | 6 | |
| 7 Sept. | Sunny | 28° /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 | 29° /14° | 0 mm | 7 | |
| 11 Sept. | Partly cloudy | 26° /14° | 0.6 mm | 6 | |
| 12 Sept. | Overcast | 22° /14° | 3.5 mm | 2 | |
| 13 Sept. | Overcast | 21° /10° | 0 mm | 3.2 | |
| 14 Sept. | Sunny | 24° /12° | 0 mm | 4.6 | |
| 15 Sept. | Overcast | 20° /14° | 2.5 mm | 4 | |
| 16 Sept. | Sunny | 24° /12° | 0 mm | 6 | |
| 17 Sept. | Sunny | 25° /13° | 0 mm | 6 | |
| 18 Sept. | Sunny | 25° /16° | 0 mm | 6 | |
| 19 Sept. | Sunny | 26° /15° | 0 mm | 7 | |
| 20 Sept. | Sunny | 26° /15° | 0 mm | 7 | |
| 21 Sept. |  Cloudy | 23° /16° | 0 mm | 6 | |
| 22 Sept. | Overcast | 24° /15° | 0 mm | 6 | |
| 23 Sept. | Overcast | 17° /13° | 1 mm | 4 | |
| 24 Sept. | Overcast | 18° /11° | 0.3 mm | 5 | |
| 25 Sept. | Sunny | 21° /9° | 2.6 mm | 5 | |
| 26 Sept. | Sunny | 24° /11° | 0 mm | 6 | |
| 27 Sept. | Sunny | 26° /11° | 0 mm | 6 | |
| 28 Sept. | Sunny | 24° /11° | 0 mm | 6 | |
| 29 Sept. | Partly cloudy | 21° /10° | 1.1 mm | 5 | |
| 30 Sept. | Sunny | 17° /9° | 0.5 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Iaşi 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 Iaşi forecast closer to your planned date for the most up-to-date weather information.
Change Month
Iaşi in September - FAQ
What are the expected maximum and minimum temperatures in Iaşi during September?
Enjoy moderate daytime temperatures of up to 26° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Iaşi during September?
In September, Iaşi can expect light to moderate rainfall, totaling 39.2 mm across approximately 5 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Iaşi during September?
The average wind speed in Iaşi during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Iaşi
Explore the daily rainfall trends and prepare for Iaşis September weather 💧
Typically, Iaşi has 5 rainy days in September with a total of 39.2 mm of rainfall.
UV exposure in Iaşi during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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