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
September
Weather in September
Temperature
In Holwierde, the average high-temperature in September slightly decreases from a pleasant 21.2°C (70.2°F) in August to a refreshing 17.9°C (64.2°F). During September in Holwierde, the average low-temperature is recorded at a cool 12.1°C (53.8°F).Humidity
In Holwierde, the average relative humidity in September is 81%.Rainfall
In Holwierde, in September, it is raining for 11.9 days, with typically 16mm (0.63") of accumulated precipitation. In Holwierde, during the entire year, the rain falls for 146.3 days and collects up to 214mm (8.43") of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 41min.On the first day of September, sunrise is at 06:42 and sunset at 20:21. On the last day of the month, sunrise is at 07:33 and sunset at 19:11 CEST.
Sunshine
In Holwierde, the average sunshine in September is 7.3h.UV index
In Holwierde, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Put precautions into practice - Protective measures against sun-induced damage are advised. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Holwierde?
What is the average humidity in September in Holwierde?
How many days does it rain in September in Holwierde?
When it does not snow in Holwierde?
How many hours of daylight does Holwierde have in September?
When is the sunrise / sunset in September in Holwierde?
How long on average sun shines in September in Holwierde?
What is the UV index reading in September in Holwierde?
Average temperature in September
Holwierde, Netherlands
- Average high temperature in September: 17.9°C
The warmest month (with the highest average high temperature) is August (21.2°C).
The month with the lowest average high temperature is January (4.2°C).
- Average low temperature in September: 12.1°C
The month with the highest average low temperature is August (14.2°C).
The coldest month (with the lowest average low temperature) is January (0.9°C).
Average pressure in September
Holwierde, Netherlands
- Average pressure in September: 1016.3mbar
The months with the highest atmospheric pressure are May and September (1016.3mbar).
The month with the lowest atmospheric pressure is November (1011.1mbar).
Average wind speed in September
Holwierde, Netherlands
- Average wind speed in September: 16.1km/h
The windiest month (with the highest average wind speed) is December (22.4km/h).
The calmest month (with the lowest average wind speed) is July (14.7km/h).
Average humidity in September
Holwierde, Netherlands
- Average humidity in September: 81%
The month with the highest relative humidity is December (88%).
The months with the lowest relative humidity are April and August (78%).
Average rainfall in September
Holwierde, Netherlands
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is August (26mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days in September
Holwierde, Netherlands
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (9.5 days).
Average snowfall in September
Holwierde, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is January (16mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Holwierde, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Holwierde, Netherlands
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 7h and 2min
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
Holwierde, Netherlands
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is April (17.8 days).
The month with the least sunshine days is July (11.1 days).
Average UV index in September
Holwierde, Netherlands
- Average UV index in September: 4
The months with the highest UV index are 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
Holwierde, Netherlands
- Average cloud cover in September: 46
The month with the most cloud cover is December (Cloud cover 68).
The months with the least cloud cover are April and August (Cloud cover 40).
Average visibility in September
Holwierde, Netherlands
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, June and August (10km).
The months with the lowest visibility are January, May, July, September, October, November and December (9km).
