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
September
Weather in September
Temperature
Retranchement's average high-temperature in September is a refreshing 18.4°C (65.1°F), marking an insignificant difference from the 20.8°C (69.4°F) of August. Throughout September, a minimal difference from peak daytime temperatures is noted, marking a steady low-temperature average of 14.2°C (57.6°F).Humidity
The months with the lowest humidity are April, August and September, with an average relative humidity of 76%.Rainfall
In Retranchement, in September, during 15.9 rainfall days, 54mm (2.13") of precipitation is typically accumulated. Throughout the year, there are 198.9 rainfall days, and 639mm (25.16") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In Retranchement, the average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 07:00 and sunset at 20:32. On the last day of September, sunrise is at 07:46 and sunset at 19:26 CEST.
Sunshine
The average sunshine in September is 7.2h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: An average UV index of 4 in September transforms into this advice:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Retranchement?
What are the least humid months?
What is the average humidity in September in Retranchement?
How many days does it rain in September?
When it does not snow in Retranchement?
How many hours of daylight does Retranchement have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Retranchement have in September?
How high is the UV index in September?
Average temperature in September
Retranchement, Netherlands
- Average high temperature in September: 18.4°C
The warmest month (with the highest average high temperature) is August (20.8°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 14.2°C
The month with the highest average low temperature is August (16.2°C).
The coldest months (with the lowest average low temperature) are January and February (3.4°C).
Average pressure in September
Retranchement, Netherlands
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is September (1017.1mbar).
The month with the lowest atmospheric pressure is November (1011.6mbar).
Average wind speed in September
Retranchement, Netherlands
- Average wind speed in September: 18.6km/h
The windiest month (with the highest average wind speed) is December (25.1km/h).
The calmest months (with the lowest average wind speed) are April and July (16.7km/h).
Average humidity in September
Retranchement, Netherlands
- Average humidity in September: 76%
The months with the highest relative humidity are January and December (83%).
The months with the lowest relative humidity are April, August and September (76%).
Average rainfall in September
Retranchement, Netherlands
- Average rainfall in September: 54mm
The wettest month (with the highest rainfall) is August (73mm).
The driest month (with the least rainfall) is April (24mm).
Average rainfall days in September
Retranchement, Netherlands
- Average rainfall days in September: 15.9 days
The month with the highest number of rainy days is December (19.3 days).
The month with the least rainy days is April (12.8 days).
Average snowfall in September
Retranchement, Netherlands
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (20mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Retranchement, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3 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
Retranchement, Netherlands
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 7h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in September
Retranchement, Netherlands
- Average sunshine days in September: 10.6 days
The month with the most sunshine days is March (14.7 days).
The month with the least sunshine days is December (7.2 days).
Average UV index in September
Retranchement, Netherlands
- 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 and December (UV index 2).
Average cloud cover in September
Retranchement, Netherlands
- Average cloud cover in September: 43
The month with the most cloud cover is December (Cloud cover 64).
The months with the least cloud cover are April and August (Cloud cover 39).
Average visibility in September
Retranchement, Netherlands
- Average visibility in September: 10km
The months with the highest visibility are March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February and December (9km).
