easeweather.com
Iaşi
Alba IuliaAninaAzugaBacăuBaia MareBilborBraşovBucharestBăile HerculaneCluj-NapocaColibițaConstanţaCraiovaCurtea de ArgeşCălăraşiGiurgiuHunedoaraHârşova
Iaşi
LiveziMangaliaMiercurea-CiucMioveniOradeaPetreştiPiatra NeamţPredealRâmnicu SăratRâmnicu VâlceaSibiuSinaiaSuceavaTimişoaraTârgu-MureşVărșand More Locations
Romania weather

Weather in Iaşi for September 2025

Your guide to Iaşi weather in September - trends and predictions

    Temperatures

  • So far, September 2025 in Iaşi is slightly warmer than the historical average by 1 °C.

  • The forecast for the next days in Iaşi predicts a temperature of 23.5 °C, which is cooler than the historical average.

  • In general, the average temperature in Iaşi at the beginning of September is 30 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.7 °C by the end of September.

    • Rain 🌧️

  • Iaşi experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 44.5 mm.

Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
26°/14°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
51 %
Avg humidity

Iaşi Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Partly cloudy
31°
2
Sunny
33°
3
Light rain shower
33°
4
Light rain shower
26°
5
Partly cloudy
29°
6
Overcast
29°
7
Sunny
29°
8
Sunny
28°
9
Sunny
29°
10
Partly cloudy
28°
11
Partly cloudy
26°
12
Partly cloudy
23°
13
Partly cloudy
28°
14
Partly cloudy
27°
15
Patchy rain possible
22°
16
Sunny
26°
17
Moderate rain
17°
18
Patchy rain possible
20°
19
Partly cloudy
25°
20
Partly cloudy
25°
21
Sunny
27°
22
Sunny
29°
23
Sunny
30°
24
Patchy rain possible
30°
25
Patchy rain possible
19°
26
Sunny
21°
27
Patchy rain possible
16°
28
Sunny
22°
29
Partly cloudy
24°
30
Sunny
20°

Temperatures trend during September in Iaşi

See the weather trend as well as the moving average line

September weather in Iaşi day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
 31° /17° 0.6 mm 7
2 Sept. Sunny
Sunny
 33° /16° 0 mm 8
3 Sept. Light rain shower
Light rain shower
 33° /16° 0.9 mm 7
4 Sept. Light rain shower
Light rain shower
 26° /15° 0.3 mm 6
5 Sept. Partly cloudy
Partly cloudy
 29° /15° 0 mm 7
6 Sept. Overcast
Overcast
 29° /14° 0.5 mm 7
7 Sept. Sunny
Sunny
 29° /14° 0 mm 7
8 Sept. Sunny
Sunny
 28° /13° 0 mm 7
9 Sept. Sunny
Sunny
 29° /14° 0.2 mm 7
10 Sept. Partly cloudy
Partly cloudy
 28° /14° 0 mm 7
11 Sept. Partly cloudy
Partly cloudy
 26° /14° 0.6 mm 6
12 Sept. Partly cloudy
Partly cloudy
 23° /14° 5.3 mm 5
13 Sept. Partly cloudy
Partly cloudy
 28° /14° 0 mm 7
14 Sept. Partly cloudy
Partly cloudy
 27° /15° 7.4 mm 7
15 Sept. Patchy rain possible
Patchy rain possible
 22° /12° 0.2 mm 0.5
16 Sept. Sunny
Sunny
 26° /12° 0 mm 1.2
17 Sept. Moderate rain
Moderate rain
 17° /12° 8.6 mm 0.2
18 Sept. Patchy rain possible
Patchy rain possible
 20° /11° 0.1 mm 1.5
19 Sept. Partly cloudy
Partly cloudy
 25° /11° 0 mm 5
20 Sept. Partly cloudy
Partly cloudy
 25° /17° 0 mm 6
21 Sept. Sunny
Sunny
 27° /15° 0 mm 6
22 Sept. Sunny
Sunny
 29° /15° 0 mm 6
23 Sept. Sunny
Sunny
 30° /15° 0 mm 6
24 Sept. Patchy rain possible
Patchy rain possible
 30° /15° 0.4 mm 5
25 Sept. Patchy rain possible
Patchy rain possible
 19° /13° 1.4 mm 4
26 Sept. Sunny
Sunny
 21° /11° 0 mm 5
27 Sept. Patchy rain possible
Patchy rain possible
 16° /13° 1 mm 3
28 Sept. Sunny
Sunny
 22° /11° 0 mm 5
29 Sept. Partly cloudy
Partly cloudy
 24° /11° 1.3 mm 6
30 Sept. Sunny
Sunny
 20° /10° 0 mm 5
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 14°. 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 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 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 💧

UV exposure in Iaşi during September

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

Quick links

More Iaşi weather pages
You are here
Location coordinates Where is Iaşi?

Get accurate weather forecasts for Iaşi, located at latitude 47.167 and longitude 27.6. Stay updated with localized weather information tailored for Iaşi.

Related locations
Select a location for accurate weather forecast
BucharestConstanţaNuuk
More Locations
Found a mistake?
We appreciate your attention to details. Tell us here.