Rouen
France
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Rouen, France

The first month of the autumn, September, is also an enjoyable month in Rouen, France, with average temperature ranging between max 19.4°C (66.9°F) and min 10.4°C (50.7°F).

Temperature

In September, the average high-temperature is almost the same as in August - an enjoyable 19.4°C (66.9°F). The average low-temperature, in Rouen, is 10.4°C (50.7°F).

Humidity

The average relative humidity in September is 81%.

Rainfall

The month with the least rainfall in Rouen is September when the rain falls for 12.1 days and typically collects 24mm (0.94") of precipitation.

Snowfall

In Rouen snow does not fall in April through October.

Daylight

In Rouen, the average length of the day is 12.6h.

Sunshine

In September, the average sunshine is 7.1h.

UV index

In Rouen, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Rouen?

In September, the average high-temperature is 19.4°C (66.9°F), and the average low-temperature is 10.4°C (50.7°F).

What is the average humidity in September in Rouen?

In September, the average relative humidity is 81%.

How much does it rain in Rouen in September?

In September, the rain falls for 12.1 days. Throughout September, 24mm (0.94") of precipitation is accumulated.

What is the driest month in Rouen?

September is the month with the least rainfall. Rain falls for 12.1 days and accumulates 24mm (0.94") of precipitation.

When it does not snow in Rouen?

April through October are months without snowfall.

How many hours of daylight does Rouen have in September?

In September, the average length of the day in Rouen is 12.6h.

How many hours of sunshine does Rouen have in September?

The average sunshine in September is 7.1h.

What is the UV index intensity in September in Rouen?

The average daily maximum UV index in September in Rouen, France, is 4. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV radiation.
Average temperature in September - Rouen, France
  • Average high temperature in September: 19.4°C

The warmest month (with the highest average high temperature) is August (22.1°C).
The month with the lowest average high temperature is January (6.4°C).

  • Average low temperature in September: 10.4°C

The month with the highest average low temperature is August (12.8°C).
The coldest month (with the lowest average low temperature) is January (1.4°C).

Average humidity in September - Rouen, France
  • Average humidity in September: 81%

Months with the highest relative humidity are January and December (89%).
The month with the lowest relative humidity is August (79%).

Average rainfall in September - Rouen, France
  • Average rainfall in September: 24mm

The wettest month (with the highest rainfall) is December (60mm).
The driest month (with the least rainfall) is September (24mm).

Average rainfall days in September - Rouen, France
  • Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is September (12.1 days).

Average snowfall in September - Rouen, France
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (14mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in September - Rouen, France
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.3 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - Rouen, France
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.2h).
The month with the shortest days is December (Average daylight: 8.3h).

  • Average sunshine in September: 7.1h

Months with the most sunshine are June and July (Average sunshine: 9h).
The month with the least sunshine is January (Average sunshine: 3.6h).

Average UV index in September - Rouen, France
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 2).