September weather forecastGreetsiel, Germany
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Greetsiel, Germany, with temperature in the range of an average high of 17.9°C (64.2°F) and an average low of 12°C (53.6°F).Temperature
Greetsiel's September weather shows a modest shift in high-temperatures, falling from August's pleasant 21.2°C (70.2°F) to a refreshing 17.9°C (64.2°F). The average low-temperature of 12°C (53.6°F) is witnessed during September.Humidity
The average relative humidity in September in Greetsiel is 81%.Rainfall
In Greetsiel, in September, during 12.5 rainfall days, 18mm (0.71") of precipitation is typically accumulated. In Greetsiel, during the entire year, the rain falls for 146.9 days and collects up to 216mm (8.5") of precipitation.Snowfall
In Greetsiel, snow does not fall in April through October.Daylight
In Greetsiel, the average length of the day in September is 12h and 41min.On the first day of September, sunrise is at 06:41 and sunset at 20:21. On the last day of the month, sunrise is at 07:32 and sunset at 19:10 CEST.
Sunshine
The average sunshine in September in Greetsiel is 7.2h.UV index
In Greetsiel, Germany, 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 ordinary individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Greetsiel, Germany
- 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°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
Greetsiel, Germany
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is May (1016.3mbar).
The month with the lowest atmospheric pressure is November (1011.1mbar).
Average wind speed in September
Greetsiel, Germany
- Average wind speed in September: 15.9km/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
Greetsiel, Germany
- 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
Greetsiel, Germany
- Average rainfall in September: 18mm
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
Greetsiel, Germany
- Average rainfall days in September: 12.5 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
Greetsiel, Germany
- 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
Greetsiel, Germany
- 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
Greetsiel, Germany
- Average daylight in September: 12h and 42min
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 12min
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
Greetsiel, Germany
- Average sunshine days in September: 13.8 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
Greetsiel, Germany
- 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
Greetsiel, Germany
- 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
Greetsiel, Germany
- 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).
