September weather forecastOttersum, Netherlands
September
Weather in September
September, the first month of the autumn in Ottersum, is still a refreshing month, with an average temperature ranging between min 11.1°C (52°F) and max 18.9°C (66°F).Temperature
September ushers in a minute temperature change, with average high-temperatures reducing from August's pleasant 22.8°C (73°F) to a refreshing 18.9°C (66°F). An average minimum temperature of 11.1°C (52°F) marks the month of September in Ottersum.Humidity
The average relative humidity in September in Ottersum is 81%.Rainfall
In September, the rain falls for 12.5 days. Throughout September, 28mm (1.1") of precipitation is accumulated. In Ottersum, during the entire year, the rain falls for 163.8 days and collects up to 406mm (15.98") of precipitation.Snowfall
In Ottersum, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 38min.On the first day of September in Ottersum, Netherlands, sunrise is at 06:49 and sunset at 20:22. On the last day of the month, sunrise is at 07:36 and sunset at 19:15 CEST.
Sunshine
The average sunshine in September in Ottersum is 7.7h.UV index
In Ottersum, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. To protect against the Sun's most potent rays, avoid direct exposure around midday. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ottersum, Netherlands
- Average high temperature in September: 18.9°C
The warmest month (with the highest average high temperature) is August (22.8°C).
The month with the lowest average high temperature is January (4.7°C).
- Average low temperature in September: 11.1°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 (0.8°C).
Average pressure in September
Ottersum, Netherlands
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is September (1017.2mbar).
The month with the lowest atmospheric pressure is November (1012.3mbar).
Average wind speed in September
Ottersum, Netherlands
- Average wind speed in September: 11.9km/h
The windiest month (with the highest average wind speed) is December (17.7km/h).
The calmest months (with the lowest average wind speed) are July and August (11.6km/h).
Average humidity in September
Ottersum, Netherlands
- Average humidity in September: 81%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Ottersum, Netherlands
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is December (43mm).
The driest month (with the least rainfall) is April (20mm).
Average rainfall days in September
Ottersum, Netherlands
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is December (16 days).
The month with the least rainy days is April (11 days).
Average snowfall in September
Ottersum, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is January (23mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Ottersum, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.5 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
Ottersum, Netherlands
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 7h and 42min
The months with the most sunshine are July and August (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Ottersum, Netherlands
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is April (16.8 days).
The month with the least sunshine days is December (11.2 days).
Average UV index in September
Ottersum, Netherlands
- 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
Ottersum, Netherlands
- Average cloud cover in September: 44
The month with the most cloud cover is December (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in September
Ottersum, Netherlands
- Average visibility in September: 8km
The 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).
