September weather forecast and climate
Petit Halleux, Belgium

Weather in September

September, the first month of the autumn, in Petit Halleux, is still a comfortable month, with average temperature ranging between min 8.7°C (47.7°F) and max 17.2°C (63°F).

Temperature

In September, the average high-temperature marginally drops, from a pleasant 20.7°C (69.3°F) in August, to an enjoyable 17.2°C (63°F). In September, in Petit Halleux, the average low-temperature is 8.7°C (47.7°F).

Humidity

In September, the average relative humidity in Petit Halleux is 84%.

Rainfall

In Petit Halleux, during 12.8 rainfall days, 41mm (1.61") of precipitation is typically accumulated. Throughout the year, there are 169.9 rainfall days, and 593mm (23.35") of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in Petit Halleux is 12.6h.

Sunshine

The average sunshine in September is 7.2h.

UV index

In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 3 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Petit Halleux?

In September, the average high-temperature is 17.2°C (63°F), and the average low-temperature is 8.7°C (47.7°F).

What is the average humidity in September in Petit Halleux?

In Petit Halleux, the average relative humidity in September is 84%.

How many days does it rain in September in Petit Halleux?

In Petit Halleux, Belgium, in September, during 12.8 rainfall days, 41mm (1.61") of precipitation is typically accumulated.

Does it snow in Petit Halleux in September?

In Petit Halleux, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Petit Halleux?

In Petit Halleux snow does not fall in June through September.

What is the average length of the day in September in Petit Halleux?

In Petit Halleux, Belgium, the average length of the day in September is 12.6h.

How many hours of sunshine does Petit Halleux have in September?

In September, the average sunshine in Petit Halleux, Belgium, is 7.2h.

What is the UV index intensity in September in Petit Halleux?

In Petit Halleux, Belgium, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV radiation.

Average temperature in September
Petit Halleux, Belgium

Average temperature in September - Petit Halleux, Belgium
  • Average high temperature in September: 17.2°C

The warmest months (with the highest average high temperature) are July and August (20.7°C).
The month with the lowest average high temperature is January (2.8°C).

  • Average low temperature in September: 8.7°C

Months with the highest average low temperature are July and August (11.5°C).
The coldest month (with the lowest average low temperature) is February (-1.5°C).

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Average pressure in September
Petit Halleux, Belgium

Average pressure in September - Petit Halleux, 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 (1013.4mbar).

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Average wind speed in September
Petit Halleux, Belgium

Average wind speed in September - Petit Halleux, Belgium
  • Average wind speed in September: 10.6km/h

The windiest month (with the highest average wind speed) is December (16.9km/h).
The calmest month (with the lowest average wind speed) is August (10.3km/h).

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Average humidity in September
Petit Halleux, Belgium

Average humidity in September - Petit Halleux, Belgium
  • Average humidity in September: 84%

Months with the highest relative humidity are January and December (91%).
The month with the lowest relative humidity is April (80%).

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Average rainfall in September
Petit Halleux, Belgium

Average rainfall in September - Petit Halleux, Belgium
  • Average rainfall in September: 41mm

The wettest month (with the highest rainfall) is December (68mm).
The driest month (with the least rainfall) is April (29mm).

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Average rainfall days in September
Petit Halleux, Belgium

Average rainfall days in September - Petit Halleux, Belgium
  • Average rainfall days in September: 12.8 days

The month with the highest number of rainy days is August (17.8 days).
The month with the least rainy days is February (8.9 days).

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Average snowfall in September
Petit Halleux, Belgium

Average snowfall in September - Petit Halleux, Belgium
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (137mm).
Months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in September
Petit Halleux, Belgium

Average snowfall days in September - Petit Halleux, Belgium
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (11.9 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Petit Halleux, Belgium

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

The month with the longest days is June (Average daylight: 16.3h).
The month with the shortest days is December (Average daylight: 8.1h).

  • Average sunshine in September: 7.2h

Months with the most sunshine are July and August (Average sunshine: 8.5h).
The month with the least sunshine is December (Average sunshine: 3h).

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Average sunshine days in September
Petit Halleux, Belgium

Average sunshine days in September - Petit Halleux, Belgium
  • Average sunshine days in September: 15.1 days

The month with the most sunshine days is September (15.1 days).
The month with the least sunshine days is December (10.1 days).

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Average UV index in September
Petit Halleux, Belgium

Average UV index in September - Petit Halleux, Belgium
  • Average UV index in September: 3

The month with the highest UV index is July (UV index 5).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in September
Petit Halleux, Belgium

Average cloud cover in September - Petit Halleux, Belgium
  • Average cloud cover in September: 48

The month with the most cloud cover is December (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 46).

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Average visibility in September
Petit Halleux, Belgium

Average visibility in September - Petit Halleux, Belgium
  • Average visibility in September: 8km

The month with the highest visibility is April (9km).
Months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (8km).

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