September weather forecastDendermonde, Belgium
September
Weather in September
September heralds the arrival of autumn, as Dendermonde slowly pulls away from summer’s warmth. The city begins to gear up for the transition, as daylight hours slowly recede to an average of 12.6 hours. Temperatures, too, follow a similar path, with the mercury dropping to 19.8°C (67.6°F) for maximum temperatures. As the leaves begin to adorn a myriad of hues, Dendermonde cuddles into an earthy charm, welcoming the fall spirit.Temperature
In Dendermonde, the average high-temperature in September slightly decreases from a moderately hot 23.2°C (73.8°F) in August to an enjoyable 19.8°C (67.6°F). An average low-temperature of 11.3°C (52.3°F) is observed during September nights in Dendermonde, Belgium.Humidity
The average relative humidity in September in Dendermonde is 78%.Rainfall
In Dendermonde, in September, it is raining for 5.3 days, with typically 7mm (0.28") of accumulated precipitation. Throughout the year, there are 78.4 rainfall days, and 96mm (3.78") of precipitation is accumulated.Snowfall
In Dendermonde, Belgium, snow does not fall in March through November.Daylight
In September, the average length of the day is 12h and 38min.On the first day of the month, sunrise is at 06:57 and sunset at 20:28. On the last day of September, in Dendermonde, Belgium, sunrise is at 07:43 and sunset at 19:23 CEST.
Sunshine
In Dendermonde, the average sunshine in September is 7.1h.UV index
In Dendermonde, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dendermonde, Belgium
- Average high temperature in September: 19.8°C
The warmest month (with the highest average high temperature) is July (23.3°C).
The month with the lowest average high temperature is January (5.6°C).
- Average low temperature in September: 11.3°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 (1.4°C).
Average pressure in September
Dendermonde, Belgium
- Average pressure in September: 1017.3mbar
The month with the highest atmospheric pressure is September (1017.3mbar).
The month with the lowest atmospheric pressure is November (1012.2mbar).
Average wind speed in September
Dendermonde, Belgium
- Average wind speed in September: 12.1km/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 (11.8km/h).
Average humidity in September
Dendermonde, Belgium
- Average humidity in September: 78%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Dendermonde, Belgium
- Average rainfall in September: 7mm
The wettest month (with the highest rainfall) is December (11mm).
The driest month (with the least rainfall) is April (5mm).
Average rainfall days in September
Dendermonde, Belgium
- Average rainfall days in September: 5.3 days
The month with the highest number of rainy days is July (8.3 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in September
Dendermonde, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is February (5mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Dendermonde, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.7 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
Dendermonde, Belgium
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 7h and 6min
The month with the most sunshine is June (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Dendermonde, Belgium
- Average sunshine days in September: 23.1 days
The month with the most sunshine days is October (23.7 days).
The month with the least sunshine days is June (17.7 days).
Average UV index in September
Dendermonde, 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
Dendermonde, Belgium
- Average cloud cover in September: 45
The months with the most cloud cover are January and December (Cloud cover 63).
The month with the least cloud cover is April (Cloud cover 43).
Average visibility in September
Dendermonde, 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).
