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
The shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from an agreeable 22.9°C (73.2°F) to an enjoyable 18.9°C (66°F). Halle records an average temperature drop to a cool 10.6°C (51.1°F) in September.Humidity
In Halle, the average relative humidity in September is 79%.Rainfall
In Halle, in September, during 11.3 rainfall days, 23mm (0.91") of precipitation is typically accumulated. In Halle, Belgium, during the entire year, the rain falls for 173 days and collects up to 456mm (17.95") of precipitation.Snowfall
In Halle, Belgium, snow does not fall in April through October.Daylight
In September, the average length of the day in Halle is 12h and 37min.On the first day of September, sunrise is at 06:57 and sunset at 20:27. On the last day of the month, sunrise is at 07:42 and sunset at 19:23 CEST.
Sunshine
In September, the average sunshine in Halle is 8h.UV index
In Halle, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
What are the temperatures in Halle in September?
What is the average humidity in September in Halle?
How many days does it rain in September in Halle?
When it does not snow in Halle?
What is the average length of the day in September in Halle?
When is the sunrise / sunset in September in Halle?
How long on average sun shines in September in Halle?
How high is the UV index in September in Halle?
Average temperature in September
Halle, Belgium
- Average high temperature in September: 18.9°C
The warmest month (with the highest average high temperature) is August (22.9°C).
The month with the lowest average high temperature is January (4.7°C).
- Average low temperature in September: 10.6°C
The month with the highest average low temperature is August (13.9°C).
The coldest month (with the lowest average low temperature) is January (0.7°C).
Average pressure in September
Halle, Belgium
- Average pressure in September: 1017.6mbar
The month with the highest atmospheric pressure is September (1017.6mbar).
The month with the lowest atmospheric pressure is November (1012.9mbar).
Average wind speed in September
Halle, Belgium
- Average wind speed in September: 11.2km/h
The windiest month (with the highest average wind speed) is December (17.3km/h).
The calmest month (with the lowest average wind speed) is August (10.9km/h).
Average humidity in September
Halle, Belgium
- Average humidity in September: 79%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Halle, Belgium
- Average rainfall in September: 23mm
The wettest months (with the highest rainfall) are June and December (49mm).
The driest month (with the least rainfall) is April (21mm).
Average rainfall days in September
Halle, Belgium
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is June (17.2 days).
The month with the least rainy days is September (11.3 days).
Average snowfall in September
Halle, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is January (46mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Halle, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.5 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
Halle, Belgium
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).
Average sunshine days in September
Halle, Belgium
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in September
Halle, Belgium
- 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
Halle, Belgium
- Average cloud cover in September: 41
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Halle, Belgium
- 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).
Halle, Belgium
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