Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
As August transitions into September, Grathem sees a gentle drop in the average high-temperature, transitioning from a warm 23.2°C (73.8°F) to a refreshing 19.3°C (66.7°F). Grathem reports an average nighttime low-temperature of 11.1°C (52°F) in September.Humidity
In September, the average relative humidity is 78%.Rainfall
In Grathem, in September, during 6.7 rainfall days, 7mm (0.28") of precipitation is typically accumulated. In Grathem, during the entire year, the rain falls for 86.6 days and collects up to 113mm (4.45") of precipitation.Snowfall
April through November are months without snowfall in Grathem.Daylight
In September, the average length of the day is 12h and 38min.On the first day of the month, sunrise is at 06:50 and sunset at 20:22. On the last day of September, sunrise is at 07:36 and sunset at 19:16 CEST.
Sunshine
In September, the average sunshine in Grathem, Netherlands, is 8h.UV index
The average daily maximum UV index in September in Grathem, Netherlands, is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 4 during September translates into the following guidance:
Undertake precautions - Guarding against sun damage is counselled. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Frequently asked questions
What is the temperature in September in Grathem?
What is the average humidity in September in Grathem?
How much does it rain in Grathem in September?
When it does not snow in Grathem?
How many hours of daylight does Grathem have in September?
When is the sunrise / sunset in September in Grathem?
How many hours of sunshine does Grathem have in September?
What is the UV index reading in September in Grathem?
Average temperature in September
Grathem, Netherlands
- Average high temperature in September: 19.3°C
The warmest months (with the highest average high temperature) are July and August (23.2°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is August (14.1°C).
The coldest month (with the lowest average low temperature) is January (1°C).
Average pressure in September
Grathem, Netherlands
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1012.8mbar).
Average wind speed in September
Grathem, Netherlands
- Average wind speed in September: 11.5km/h
The windiest month (with the highest average wind speed) is December (17.5km/h).
The calmest months (with the lowest average wind speed) are July and August (11.3km/h).
Average humidity in September
Grathem, Netherlands
- Average humidity in September: 78%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Grathem, Netherlands
- Average rainfall in September: 7mm
The wettest month (with the highest rainfall) is February (12mm).
The driest month (with the least rainfall) is April (5mm).
Average rainfall days in September
Grathem, Netherlands
- Average rainfall days in September: 6.7 days
The month with the highest number of rainy days is May (9.1 days).
The month with the least rainy days is April (5.6 days).
Average snowfall in September
Grathem, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is February (9mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Grathem, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.2 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
Grathem, Netherlands
- Average daylight in September: 12h and 4min
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: 8h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Grathem, Netherlands
- Average sunshine days in September: 20.9 days
The month with the most sunshine days is October (23.2 days).
The month with the least sunshine days is June (17.8 days).
Average UV index in September
Grathem, 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
Grathem, Netherlands
- Average cloud cover in September: 42
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Grathem, Netherlands
- 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).
Grathem, Netherlands
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