September weather forecast and climate
Petit Hornu, Belgium

Weather in September

The first month of the autumn, September, is still a comfortable month in Petit Hornu, Belgium, with average temperature fluctuating between 19.4°C (66.9°F) and 10.4°C (50.7°F).

Temperature

In Petit Hornu, the average high-temperature in September marginally drops, from a pleasant 22.7°C (72.9°F) in August, to an enjoyable 19.4°C (66.9°F). The average low-temperature, is 10.4°C (50.7°F).

Humidity

In Petit Hornu, the average relative humidity is 80%.

Rainfall

The month with the least rainfall in Petit Hornu is September when the rain falls for 12.9 days and typically collects 26mm (1.02") of precipitation.

Snowfall

April through September are months without snowfall.

Daylight

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

Sunshine

In Petit Hornu, the average sunshine is 7.4h.

UV index

In September, the average daily maximum UV index in Petit Hornu is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Petit Hornu?

The average high-temperature, in September, in Petit Hornu, is 19.4°C (66.9°F), while the average low-temperature is 10.4°C (50.7°F).

What is the average humidity in September in Petit Hornu?

In September, the average relative humidity is 80%.

How much does it rain in Petit Hornu in September?

In Petit Hornu, Belgium, in September, during 12.9 rainfall days, 26mm (1.02") of precipitation is typically accumulated.

What is the driest month in Petit Hornu?

The month with the least rainfall in Petit Hornu, Belgium, is September when the rain falls for 12.9 days and typically collects 26mm (1.02") of precipitation.

Does it snow in Petit Hornu in September?

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

When it does not snow in Petit Hornu?

April through September are months without snowfall.

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

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

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

In September, the average sunshine in Petit Hornu is 7.4h.

What is the UV index reading in September in Petit Hornu?

In Petit Hornu, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in September
Petit Hornu, Belgium

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

The warmest months (with the highest average high temperature) are July and August (22.7°C).
The month with the lowest average high temperature is January (5°C).

  • Average low temperature in September: 10.4°C

Months with the highest average low temperature are July and August (12.9°C).
The coldest month (with the lowest average low temperature) is January (0.7°C).

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Average pressure in September
Petit Hornu, Belgium

Average pressure in September - Petit Hornu, 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 (1012.6mbar).

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Average wind speed in September
Petit Hornu, Belgium

Average wind speed in September - Petit Hornu, Belgium
  • Average wind speed in September: 12.3km/h

The windiest month (with the highest average wind speed) is December (18.8km/h).
The calmest month (with the lowest average wind speed) is August (11.9km/h).

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Average humidity in September
Petit Hornu, Belgium

Average humidity in September - Petit Hornu, Belgium
  • Average humidity in September: 80%

The month with the highest relative humidity is December (89%).
Months with the lowest relative humidity are July and August (77%).

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Average rainfall in September
Petit Hornu, Belgium

Average rainfall in September - Petit Hornu, Belgium
  • Average rainfall in September: 26mm

The wettest month (with the highest rainfall) is December (60mm).
The driest month (with the least rainfall) is September (26mm).

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Average rainfall days in September
Petit Hornu, Belgium

Average rainfall days in September - Petit Hornu, Belgium
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is March (12.8 days).

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Average snowfall in September
Petit Hornu, Belgium

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

The month with the highest snowfall is January (31mm).
Months with the least snowfall are April, May, June, July, August and September (0mm).

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Average snowfall days in September
Petit Hornu, Belgium

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

The month with the highest number of snowfall days is January (3.3 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
Petit Hornu, Belgium

Average daylight in September / Average sunshine in September - Petit Hornu, 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: 7.4h

Months with the most sunshine are July and August (Average sunshine: 8.8h).
Months with the least sunshine are January and December (Average sunshine: 3.7).

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Average sunshine days in September
Petit Hornu, Belgium

Average sunshine days in September - Petit Hornu, Belgium
  • Average sunshine days in September: 14.6 days

The month with the most sunshine days is October (15.7 days).
The month with the least sunshine days is July (9.8 days).

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Average UV index in September
Petit Hornu, Belgium

Average UV index in September - Petit Hornu, 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
Petit Hornu, Belgium

Average cloud cover in September - Petit Hornu, Belgium
  • Average cloud cover in September: 44

The month with the most cloud cover is January (Cloud cover 63).
Months with the least cloud cover are April and August (Cloud cover 43).

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Average visibility in September
Petit Hornu, Belgium

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

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

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