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
With September's onset, the weather reveals a slight temperature decrease, transitioning from an agreeable 22.4°C (72.3°F) in August to a comfortable 18.2°C (64.8°F). Altwarp's average low-temperature is measured at a fresh 12.3°C (54.1°F) during September.Humidity
The average relative humidity in September is 76%.Rainfall
In Altwarp, during September, the rain falls for 12.2 days and regularly aggregates up to 32mm (1.26") of precipitation. Throughout the year, in Altwarp, there are 151.9 rainfall days, and 396mm (15.59") of precipitation is accumulated.Snowfall
In Altwarp, snow does not fall in May through October.Sea temperature
In Altwarp, in September, the average water temperature is 17.3°C (63.1°F).Note: Most people do not enjoy swimming in water that is 17.3°C (63.1°F). Breathing becomes increasingly challenging as the water temperature dips under 21°C (69.8°F).
Daylight
In September, the average length of the day in Altwarp is 12h and 41min.On the first day of the month, sunrise is at 06:12 and sunset at 19:52. On the last day of September, sunrise is at 07:03 and sunset at 18:41 CEST.
Sunshine
The average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Act with care - The need to guard against sun damage is communicated. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What is the temperature in September in Altwarp?
What is the average humidity in September in Altwarp?
How much does it rain in Altwarp in September?
When it does not snow in Altwarp?
How cold is the water in September in Altwarp?
What is the average length of the day in September in Altwarp?
When are sunrise and sunset in September in Altwarp?
How many hours of sunshine does Altwarp have in September?
What is the UV index reading in September in Altwarp?
Average temperature in September
Altwarp, Germany
- Average high temperature in September: 18.2°C
The warmest month (with the highest average high temperature) is August (22.4°C).
The month with the lowest average high temperature is January (2.1°C).
- Average low temperature in September: 12.3°C
The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is January (-0.9°C).
Average pressure in September
Altwarp, Germany
- Average pressure in September: 1016.4mbar
The month with the highest atmospheric pressure is September (1016.4mbar).
The month with the lowest atmospheric pressure is November (1013mbar).
Average wind speed in September
Altwarp, Germany
- Average wind speed in September: 15.8km/h
The windiest month (with the highest average wind speed) is December (20km/h).
The calmest month (with the lowest average wind speed) is August (14.1km/h).
Average humidity in September
Altwarp, Germany
- Average humidity in September: 76%
The months with the highest relative humidity are January and December (87%).
The month with the lowest relative humidity is August (73%).
Average rainfall in September
Altwarp, Germany
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is July (55mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in September
Altwarp, Germany
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is August (17.8 days).
The month with the least rainy days is February (7.4 days).
Average snowfall in September
Altwarp, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (27mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Altwarp, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Altwarp, Germany
- Average sea temperature in September: 17.3°C
The best month for swimming (with the highest average sea temperature) is August (18.9°C).
The coldest months (with the lowest average sea temperature) are January and February (2.6°C).
Average daylight in September /
Average sunshine in September
Altwarp, Germany
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The months with the least sunshine are January and December (Average sunshine: 3h and 12min).
Average sunshine days in September
Altwarp, Germany
- Average sunshine days in September: 13 days
The month with the most sunshine days is April (18.5 days).
The month with the least sunshine days is August (11.5 days).
Average UV index in September
Altwarp, 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
Altwarp, Germany
- Average cloud cover in September: 38
The months with the most cloud cover are January and December (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Altwarp, Germany
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).
Altwarp, Germany
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