Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Saint-Riquier experiences a subtle adjustment in high-temperatures to an enjoyable 18.8°C (65.8°F) with the onset of September, maintaining near parity with August's 21.7°C (71.1°F). Throughout September, Saint-Riquier records an average temperature of 11.6°C (52.9°F) at night.Humidity
In September, the average relative humidity in Saint-Riquier is 80%.Rainfall
In Saint-Riquier, in September, it is raining for 13.6 days, with typically 30mm (1.18") of accumulated precipitation. Throughout the year, in Saint-Riquier, there are 190.2 rainfall days, and 547mm (21.54") of precipitation is accumulated.Snowfall
In Saint-Riquier, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 37min.On the first day of September in Saint-Riquier, sunrise is at 07:07 and sunset at 20:36. On the last day of the month, sunrise is at 07:51 and sunset at 19:32 CEST.
Sunshine
In Saint-Riquier, the average sunshine in September is 7.3h.UV index
In Saint-Riquier, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the UV index of 4 transforms into the following advice:
Adopt protective measures - Suggestions to resist sunburn are offered. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Frequently asked questions
What are the temperatures in Saint-Riquier in September?
What is the average humidity in September in Saint-Riquier?
How much does it rain in Saint-Riquier in September?
When it does not snow in Saint-Riquier?
What is the average length of the day in September in Saint-Riquier?
What time are sunrise and sunset in September in Saint-Riquier?
How long on average sun shines in September in Saint-Riquier?
How high is the UV index in September in Saint-Riquier?
Average temperature in September
Saint-Riquier, France
- Average high temperature in September: 18.8°C
The warmest month (with the highest average high temperature) is August (21.7°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 11.6°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).
Average pressure in September
Saint-Riquier, France
- Average pressure in September: 1017.7mbar
The month with the highest atmospheric pressure is September (1017.7mbar).
The month with the lowest atmospheric pressure is November (1012.2mbar).
Average wind speed in September
Saint-Riquier, France
- Average wind speed in September: 14km/h
The windiest month (with the highest average wind speed) is December (20.3km/h).
The calmest month (with the lowest average wind speed) is August (13.4km/h).
Average humidity in September
Saint-Riquier, France
- Average humidity in September: 80%
The months with the highest relative humidity are January, November and December (87%).
The month with the lowest relative humidity is August (78%).
Average rainfall in September
Saint-Riquier, France
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is December (71mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in September
Saint-Riquier, France
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is April (13.5 days).
Average snowfall in September
Saint-Riquier, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (29mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Saint-Riquier, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Saint-Riquier, France
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Saint-Riquier, France
- Average sunshine days in September: 13.5 days
The months with the most sunshine days are March and April (13.7 days).
The month with the least sunshine days is November (10.1 days).
Average UV index in September
Saint-Riquier, 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
Saint-Riquier, France
- Average cloud cover in September: 42
The months with the most cloud cover are January, November and December (Cloud cover 59).
The months with the least cloud cover are April and August (Cloud cover 40).
Average visibility in September
Saint-Riquier, France
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Saint-Riquier, France
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