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
September is characterized by a slight reduction in average high-temperature, easing from a pleasant 21.8°C (71.2°F) in August to a refreshing 18.5°C (65.3°F). Chimay experiences a consistent average temperature of 9.6°C (49.3°F) throughout the nights in September.Humidity
The average relative humidity in September in Chimay is 82%.Rainfall
In September, the rain falls for 13.3 days. Throughout September, 32mm (1.26") of precipitation is accumulated. Throughout the year, in Chimay, there are 188.2 rainfall days, and 567mm (22.32") of precipitation is accumulated.Snowfall
May through September are months without snowfall in Chimay.Daylight
In September, the average length of the day in Chimay is 12h and 37min.On the first day of September, sunrise is at 06:58 and sunset at 20:26. On the last day of the month, sunrise is at 07:42 and sunset at 19:23 CEST.
Sunshine
In Chimay, the average sunshine in September is 7.6h.UV index
In Chimay, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Chimay in September?
What is the average humidity in September in Chimay?
How much does it rain in Chimay in September?
When it does not snow in Chimay?
Does it snow in Chimay in September?
What is the average length of the day in September in Chimay?
When is the sunrise / sunset in September in Chimay?
How long on average sun shines in September in Chimay?
How high is the UV index in September in Chimay?
Average temperature in September
Chimay, Belgium
- Average high temperature in September: 18.5°C
The warmest month (with the highest average high temperature) is July (21.9°C).
The month with the lowest average high temperature is January (3.9°C).
- Average low temperature in September: 9.6°C
The month with the highest average low temperature is August (12.4°C).
The coldest month (with the lowest average low temperature) is January (-0.2°C).
Average pressure in September
Chimay, Belgium
- 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 (1013.1mbar).
Average wind speed in September
Chimay, Belgium
- Average wind speed in September: 11km/h
The windiest month (with the highest average wind speed) is December (17.4km/h).
The calmest month (with the lowest average wind speed) is August (10.6km/h).
Average humidity in September
Chimay, Belgium
- Average humidity in September: 82%
The month with the highest relative humidity is December (91%).
The months with the lowest relative humidity are April and August (79%).
Average rainfall in September
Chimay, Belgium
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is December (71mm).
The driest month (with the least rainfall) is April (31mm).
Average rainfall days in September
Chimay, Belgium
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is February (12.4 days).
Average snowfall in September
Chimay, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is January (68mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Chimay, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Chimay, Belgium
- 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 12min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is July (Average sunshine: 8h and 54min).
The months with the least sunshine are January and December (Average sunshine: 3h and 24min).
Average sunshine days in September
Chimay, Belgium
- Average sunshine days in September: 13 days
The months with the most sunshine days are April and October (13.4 days).
The month with the least sunshine days is December (9.4 days).
Average UV index in September
Chimay, Belgium
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Chimay, Belgium
- Average cloud cover in September: 44
The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 43).
Average visibility in September
Chimay, Belgium
- Average visibility in September: 8km
The months with the highest visibility are March, April and August (9km).
The months with the lowest visibility are January, February, May, June, July, September, October, November and December (8km).
