September weather forecast and climate
Grandcourt, Belgium

Weather in September

September, the first month of the autumn, in Grandcourt, is also an enjoyable month, with average temperature fluctuating between 9.3°C (48.7°F) and 18.5°C (65.3°F).

Temperature

In Grandcourt, the average high-temperature slightly decreases, from a pleasant 22.3°C (72.1°F) in August, to a comfortable 18.5°C (65.3°F). The average low-temperature, in Grandcourt, is 9.3°C (48.7°F).

Humidity

In Grandcourt, the average relative humidity in September is 81%.

Rainfall

In Grandcourt, Belgium, during 12.5 rainfall days, 41mm (1.61") of precipitation is typically accumulated. Throughout the year, there are 179.3 rainfall days, and 612mm (24.09") of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Grandcourt, Belgium.

Daylight

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

Sunshine

In Grandcourt, Belgium, the average sunshine is 7.8h.

UV index

In Grandcourt, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 3 translate into the following recommendations:
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Grandcourt?

The average high-temperature, in September, in Grandcourt, is 18.5°C (65.3°F), while the average low-temperature is 9.3°C (48.7°F).

What is the average humidity in September in Grandcourt?

In September, the average relative humidity in Grandcourt is 81%.

How many days does it rain in September in Grandcourt?

In Grandcourt, Belgium, in September, it is raining for 12.5 days, with typically 41mm (1.61") of accumulated precipitation.

When it does not snow in Grandcourt?

In Grandcourt snow does not fall in May through October.

How many hours of daylight does Grandcourt have in September?

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

How many hours of sunshine does Grandcourt have in September?

In September, the average sunshine in Grandcourt is 7.8h.

What is the UV index intensity in September in Grandcourt?

The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.

Average temperature in September
Grandcourt, Belgium

Average temperature in September - Grandcourt, Belgium
  • Average high temperature in September: 18.5°C

The warmest months (with the highest average high temperature) are July and August (22.3°C).
The month with the lowest average high temperature is January (3.6°C).

  • Average low temperature in September: 9.3°C

Months with the highest average low temperature are July and August (12.3°C).
The coldest month (with the lowest average low temperature) is January (-0.8°C).

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Average pressure in September
Grandcourt, Belgium

Average pressure in September - Grandcourt, Belgium
  • Average pressure in September: 1017.9mbar

The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is November (1013.9mbar).

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Average wind speed in September
Grandcourt, Belgium

Average wind speed in September - Grandcourt, Belgium
  • Average wind speed in September: 10.5km/h

The windiest month (with the highest average wind speed) is February (16.1km/h).
The calmest month (with the lowest average wind speed) is August (10km/h).

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Average humidity in September
Grandcourt, Belgium

Average humidity in September - Grandcourt, Belgium
  • Average humidity in September: 81%

The month with the highest relative humidity is December (92%).
Months with the lowest relative humidity are April and August (78%).

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Average rainfall in September
Grandcourt, Belgium

Average rainfall in September - Grandcourt, Belgium
  • Average rainfall in September: 41mm

The wettest month (with the highest rainfall) is December (74mm).
The driest month (with the least rainfall) is April (33mm).

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Average rainfall days in September
Grandcourt, Belgium

Average rainfall days in September - Grandcourt, Belgium
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is February (11.9 days).

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Average snowfall in September
Grandcourt, Belgium

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

The month with the highest snowfall is January (62mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in September
Grandcourt, Belgium

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

The month with the highest number of snowfall days is January (6.6 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
Grandcourt, Belgium

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

The month with the longest days is June (Average daylight: 16.2h).
The month with the shortest days is December (Average daylight: 8.2h).

  • Average sunshine in September: 7.8h

The month with the most sunshine is July (Average sunshine: 9.2h).
The month with the least sunshine is December (Average sunshine: 3h).

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Average sunshine days in September
Grandcourt, Belgium

Average sunshine days in September - Grandcourt, Belgium
  • Average sunshine days in September: 15.2 days

The month with the most sunshine days is September (15.2 days).
Months with the least sunshine days are June, November and December (9.6 days).

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Average UV index in September
Grandcourt, Belgium

Average UV index in September - Grandcourt, Belgium
  • Average UV index in September: 3

Months with the highest UV index are June and July (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
Grandcourt, Belgium

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

The month with the most cloud cover is December (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 40).

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Average visibility in September
Grandcourt, Belgium

Average visibility in September - Grandcourt, Belgium
  • Average visibility in September: 8km

Months with the highest visibility are March, April and August (9km).
The month with the lowest visibility is November (7km).

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