September weather forecast and climate
Hannonsart, Belgium

Weather in September

September, the first month of the autumn, in Hannonsart, is still a comfortable month, with average temperature ranging between max 19.4°C (66.9°F) and min 11.1°C (52°F).

Temperature

In Hannonsart, the average high-temperature in September slightly decreases, from a warm 23.1°C (73.6°F) in August, to a comfortable 19.4°C (66.9°F). In September, in Hannonsart, the average low-temperature is 11.1°C (52°F).

Humidity

In Hannonsart, the average relative humidity in September is 79%.

Rainfall

April and September are months with the least rain in Hannonsart, Belgium, when the rain falls for 12.3 days and typically aggregates up to 25mm (0.98") of rain.

Snowfall

April through September are months without snowfall in Hannonsart.

Daylight

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

Sunshine

The average sunshine in Hannonsart is 7.6h.

UV index

The average daily maximum UV index in Hannonsart is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 4 in September transform into the following instructions:
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.
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FAQ

What is the temperature in September in Hannonsart?

In September, in Hannonsart, Belgium, the average high-temperature is 19.4°C (66.9°F), and the average low-temperature is 11.1°C (52°F).

What is the average humidity in September in Hannonsart?

In Hannonsart, the average relative humidity in September is 79%.

How many days does it rain in September in Hannonsart?

In Hannonsart, Belgium, in September, it is raining for 12.3 days, with typically 25mm (0.98") of accumulated precipitation.

What is the driest month in Hannonsart?

April and September are months with the least rain when the rain falls for 12.3 days and typically aggregates up to 25mm (0.98") of rain.

Does it snow in Hannonsart in September?

In Hannonsart, Belgium, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Hannonsart?

In Hannonsart snow does not fall in April through September.

What is the average length of the day in September in Hannonsart?

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

How many hours of sunshine does Hannonsart have in September?

In Hannonsart, Belgium, the average sunshine in September is 7.6h.

How high is the UV index in September in Hannonsart?

The average daily maximum UV index in September in Hannonsart is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in September
Hannonsart, Belgium

Average temperature in September - Hannonsart, Belgium
  • Average high temperature in September: 19.4°C

The warmest month (with the highest average high temperature) is August (23.1°C).
The month with the lowest average high temperature is January (5°C).

  • Average low temperature in September: 11.1°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°C).

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Average pressure in September
Hannonsart, Belgium

Average pressure in September - Hannonsart, Belgium
  • Average pressure in September: 1017.5mbar

The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1012.5mbar).

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Average wind speed in September
Hannonsart, Belgium

Average wind speed in September - Hannonsart, Belgium
  • Average wind speed in September: 12km/h

The windiest month (with the highest average wind speed) is December (18.1km/h).
The calmest month (with the lowest average wind speed) is August (11.7km/h).

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Average humidity in September
Hannonsart, Belgium

Average humidity in September - Hannonsart, Belgium
  • Average humidity in September: 79%

The month with the highest relative humidity is December (88%).
Months with the lowest relative humidity are April, July and August (75%).

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Average rainfall in September
Hannonsart, Belgium

Average rainfall in September - Hannonsart, Belgium
  • Average rainfall in September: 25mm

The wettest month (with the highest rainfall) is December (54mm).
The driest months (with the least rainfall) are April and September (25mm).

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Average rainfall days in September
Hannonsart, Belgium

Average rainfall days in September - Hannonsart, Belgium
  • Average rainfall days in September: 12.3 days

The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is February (11.6 days).

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Average snowfall in September
Hannonsart, Belgium

Average snowfall in September - Hannonsart, Belgium
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (34mm).
Months with the least snowfall are April, May, June, July, August and September (0mm).

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Average snowfall days in September
Hannonsart, Belgium

Average snowfall days in September - Hannonsart, Belgium
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (4.3 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Hannonsart, Belgium

Average daylight in September / Average sunshine in September - Hannonsart, Belgium
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.4h).
The month with the shortest days is December (Average daylight: 8.1h).

  • Average sunshine in September: 7.6h

Months with the most sunshine are July and August (Average sunshine: 9h).
The month with the least sunshine is December (Average sunshine: 3.8h).

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Average sunshine days in September
Hannonsart, Belgium

Average sunshine days in September - Hannonsart, Belgium
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is September (14.5 days).
Months with the least sunshine days are February, August and December (10.9 days).

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Average UV index in September
Hannonsart, Belgium

Average UV index in September - Hannonsart, Belgium
  • Average UV index in September: 4

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

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Average cloud cover in September
Hannonsart, Belgium

Average cloud cover in September - Hannonsart, Belgium
  • Average cloud cover in September: 42

The month with the most cloud cover is December (Cloud cover 62).
Months with the least cloud cover are April, August and September (Cloud cover 42).

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Average visibility in September
Hannonsart, Belgium

Average visibility in September - Hannonsart, Belgium
  • Average visibility in September: 9km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).

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