September weather forecastNancy, France
September
Weather in September
With the start of September, Nancy, France, begins to transition from the warmth of summer to the crisp climate of autumn. The weather cools considerably, with temperatures going down to 19.5°C (67.1°F). There is a visible decrease in daylight hours and a reduced UV index. As autumn draws near, the city witnesses fewer but substantial rainfalls, endorsing the weather transition period with variations in atmospheric pressure. The wind picks up slightly, marking the start of breezier days.Temperature
During the shift to September in Nancy, a minor reduction in average high-temperature is observed, shifting from a moderately hot 23.5°C (74.3°F) in August to a comfortable 19.5°C (67.1°F). During September, Nancy witnesses a consistent average low-temperature of 9.7°C (49.5°F).Humidity
In Nancy, the average relative humidity in September is 79%.Rainfall
In Nancy, in September, it is raining for 11.7 days, with typically 33mm (1.3") of accumulated precipitation. Throughout the year, in Nancy, there are 179 rainfall days, and 518mm (20.39") of precipitation is accumulated.Snowfall
In Nancy, France, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 35min.On the first day of September in Nancy, sunrise is at 06:53 and sunset at 20:17. On the last day of the month, sunrise is at 07:34 and sunset at 19:16 CEST.
Sunshine
The average sunshine in September in Nancy is 8.4h.UV index
In September, the average daily maximum UV index in Nancy is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Nancy, France
- Average high temperature in September: 19.5°C
The warmest month (with the highest average high temperature) is August (23.5°C).
The month with the lowest average high temperature is January (3.7°C).
- Average low temperature in September: 9.7°C
The month with the highest average low temperature is August (13.4°C).
The coldest month (with the lowest average low temperature) is January (-0.4°C).
Average pressure in September
Nancy, France
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1019.4mbar).
The month with the lowest atmospheric pressure is November (1014.7mbar).
Average wind speed in September
Nancy, France
- Average wind speed in September: 10km/h
The windiest month (with the highest average wind speed) is December (15.9km/h).
The calmest month (with the lowest average wind speed) is August (9.3km/h).
Average humidity in September
Nancy, France
- Average humidity in September: 79%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Nancy, France
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is June (62mm).
The driest month (with the least rainfall) is April (30mm).
Average rainfall days in September
Nancy, France
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is February (11.5 days).
Average snowfall in September
Nancy, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (38mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Nancy, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Nancy, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).
Average sunshine days in September
Nancy, France
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is September (15.4 days).
The month with the least sunshine days is June (8.4 days).
Average UV index in September
Nancy, France
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Nancy, France
- Average cloud cover in September: 35
The month with the most cloud cover is December (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Nancy, France
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August and September (9km).
The months with the lowest visibility are January, October, November and December (8km).
