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 sea temperature 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
A modest decline in the average high-temperature is seen during September, decreasing from a pleasant 21.3°C (70.3°F) in August to a refreshing 17.5°C (63.5°F). During September, Altefähr's temperature shows a minor deviation from daytime highs, falling to a steady low-temperature average of 13°C (55.4°F).Humidity
The average relative humidity in September is 77%.Rainfall
In September, the rain falls for 14.1 days. Throughout September, 31mm (1.22") of precipitation is accumulated. In Altefähr, during the entire year, the rain falls for 171.4 days and collects up to 410mm (16.14") of precipitation.Snowfall
In Altefähr, Germany, snow does not fall in May through October.Sea temperature
In Altefähr, the average seawater temperature in September is 16.8°C (62.2°F).Note: The majority of individuals find it unpleasurable to swim in 16.8°C (62.2°F). It becomes progressively harder to manage one's breathing as the water temperature falls below 21°C (69.8°F).
Daylight
In Altefähr, Germany, the average length of the day in September is 12h and 42min.On the first day of the month, sunrise is at 06:16 and sunset at 19:58. On the last day of September, sunrise is at 07:08 and sunset at 18:45 CEST.
Sunshine
In Altefähr, the average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index in Altefähr, Germany, is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Exercise prevention - Warding off sunburn is urged. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
What is the usual temperature for Altefähr in September?
What is the average humidity in September in Altefähr?
How much does it rain in Altefähr in September?
When it does not snow in Altefähr?
What is the sea temperature in September in Altefähr?
How many hours of daylight does Altefähr have in September?
When are sunrise and sunset in September in Altefähr?
How many hours of sunshine does Altefähr have in September?
What is the UV index reading in September in Altefähr?
Average temperature in September
Altefähr, Germany
- Average high temperature in September: 17.5°C
The warmest month (with the highest average high temperature) is August (21.3°C).
The month with the lowest average high temperature is January (2.4°C).
- Average low temperature in September: 13°C
The month with the highest average low temperature is August (15.7°C).
The coldest month (with the lowest average low temperature) is February (0.1°C).
Average pressure in September
Altefähr, Germany
- Average pressure in September: 1016.1mbar
The month with the highest atmospheric pressure is September (1016.1mbar).
The month with the lowest atmospheric pressure is November (1012.3mbar).
Average wind speed in September
Altefähr, Germany
- Average wind speed in September: 18.6km/h
The windiest month (with the highest average wind speed) is December (23.9km/h).
The calmest month (with the lowest average wind speed) is August (16.5km/h).
Average humidity in September
Altefähr, Germany
- Average humidity in September: 77%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Altefähr, Germany
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is August (61mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in September
Altefähr, Germany
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is August (18.2 days).
The month with the least rainy days is February (10.3 days).
Average snowfall in September
Altefähr, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (32mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Altefähr, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Altefähr, Germany
- Average sea temperature in September: 16.8°C
The best month for swimming (with the highest average sea temperature) is August (17.8°C).
The coldest month (with the lowest average sea temperature) is February (2.6°C).
Average daylight in September /
Average sunshine in September
Altefähr, Germany
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in September
Altefähr, Germany
- Average sunshine days in September: 11.7 days
The month with the most sunshine days is April (16.3 days).
The month with the least sunshine days is August (9.1 days).
Average UV index in September
Altefähr, Germany
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Altefähr, Germany
- Average cloud cover in September: 40
The month with the most cloud cover is December (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Altefähr, Germany
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).
Altefähr, Germany
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