Weather in September
Temperature
The shift from August to September includes a small decrease in the average high-temperature, from a moderately hot 26.6°C (79.9°F) to a pleasant 22.7°C (72.9°F). From the height of daytime heat, the temperature recedes to an average of 10.7°C (51.3°F) at night during September.Rainfall
In Iași, during September, the rain falls for 5 days and regularly aggregates up to 48mm (1.89") of precipitation. Throughout the year, there are 80 rainfall days, and 589mm (23.19") of precipitation is accumulated.Snowfall
In Iași, snow does not fall in May through September.Daylight
In Iași, the average length of the day in September is 12h and 34min.On the first day of September, sunrise is at 06:29 and sunset at 19:49. On the last day of the month, sunrise is at 07:07 and sunset at 18:51 EEST.
Sunshine
In September, the average sunshine is 6.9h.UV index
The average daily maximum UV index in September in Iași, Romania, is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In September, a daily UV index of 5 turns into the following recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
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Average temperature in September
Iași, Romania
- Average high temperature in September: 22.7°C
The warmest month (with the highest average high temperature) is July (26.8°C).
The month with the lowest average high temperature is January (-0.1°C).
- Average low temperature in September: 10.7°C
The month with the highest average low temperature is July (15°C).
The coldest month (with the lowest average low temperature) is January (-6.9°C).
Average rainfall in September
Iași, Romania
- Average rainfall in September: 48mm
The wettest month (with the highest rainfall) is June (101mm).
The driest month (with the least rainfall) is October (25mm).
Average rainfall days in September
Iași, Romania
- Average rainfall days in September: 5 days
The months with the highest number of rainy days are June and July (9 days).
The months with the least rainy days are August, September and October (5 days).
Average snowfall in September
Iași, Romania
- Average snowfall in September: 0mm
The month with the highest snowfall is February (143mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average daylight in September /
Average sunshine in September
Iași, Romania
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 6h and 5min
The month with the most sunshine is July (Average sunshine: 8h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).
Average UV index in September
Iași, Romania
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 1).
Iași, Romania
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