September weather forecast
Heuweiler, Germany

September

Weather in September

September, the first month of the autumn in Heuweiler, is still a refreshing month, with an average temperature ranging between min 8.8°C (47.8°F) and max 18.8°C (65.8°F).

Temperature

September's arrival aligns with a minor decrease in average high-temperatures, from August's moderately hot 23.3°C (73.9°F) to a comfortable 18.8°C (65.8°F). September nights are marked by an average temperature drop to a frosty 8.8°C (47.8°F).

Humidity

The average relative humidity in September in Heuweiler is 80%.

Rainfall

September is the month with the least rainfall in Heuweiler, Germany. Rain falls for 7.4 days and accumulates 12mm (0.47") of precipitation.

Snowfall

In Heuweiler, snow does not fall in May through October.

Daylight

In September, the average length of the day is 12h and 34min.
On the first day of the month, sunrise is at 06:47 and sunset at 20:09. On the last day of September, in Heuweiler, Germany, sunrise is at 07:26 and sunset at 19:09 CEST.

Sunshine

In September, the average sunshine in Heuweiler is 8.8h.

UV index

The average daily maximum UV index in September in Heuweiler is 3. 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: A maximum daily UV index of 3 during September morphs into the following directions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.

Frequently asked questions

What are the temperatures in Heuweiler in September?
In Heuweiler, 18.8°C (65.8°F) is the average high-temperature and 8.8°C (47.8°F) is the average low-temperature during September.
What is the average humidity in September in Heuweiler?
In September, the average relative humidity in Heuweiler is 80%.
What is the driest month in Heuweiler?
September is the month with the least rainfall in Heuweiler. Rain falls for 7.4 days and accumulates 12mm (0.47") of precipitation.
How much does it rain in Heuweiler in September?
In Heuweiler, during September, the rain falls for 7.4 days and regularly aggregates up to 12mm (0.47") of precipitation.
When it does not snow in Heuweiler?
In Heuweiler, snow does not fall in May through October.
How many hours of daylight does Heuweiler have in September?
In Heuweiler, the average day length in September is 12h and 34min.
When are sunrise and sunset in September in Heuweiler?
In September, on the first day of the month, sunrise is at 06:47 and sunset at 20:09. On the last day of the month, sunrise is at 07:26 and sunset at 19:09 CEST.
How long on average sun shines in September in Heuweiler?
In September, the average sunshine duration in Heuweiler, Germany, is 8.8h.
How high is the UV index in September in Heuweiler?
In September, the average daily maximum UV index in Heuweiler, Germany, is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Heuweiler, Germany
  • Average high temperature in September: 18.8°C

The warmest month (with the highest average high temperature) is August (23.3°C).
The month with the lowest average high temperature is January (3°C).

  • Average low temperature in September: 8.8°C

The month with the highest average low temperature is July (12.3°C).
The coldest month (with the lowest average low temperature) is February (-2.1°C).

Average pressure in September
Heuweiler, Germany
  • Average pressure in September: 1018.6mbar

The month with the highest atmospheric pressure is December (1020.4mbar).
The month with the lowest atmospheric pressure is November (1015.5mbar).

Average wind speed in September
Heuweiler, Germany
  • Average wind speed in September: 7.4km/h

The windiest months (with the highest average wind speed) are February and December (10.3km/h).
The calmest month (with the lowest average wind speed) is August (7km/h).

Average humidity in September
Heuweiler, Germany
  • Average humidity in September: 80%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (77%).

Average rainfall in September
Heuweiler, Germany
  • Average rainfall in September: 12mm

The wettest month (with the highest rainfall) is June (36mm).
The driest month (with the least rainfall) is September (12mm).

Average rainfall days in September
Heuweiler, Germany
  • Average rainfall days in September: 7.4 days

The month with the highest number of rainy days is June (13.3 days).
The month with the least rainy days is September (7.4 days).

Average snowfall in September
Heuweiler, Germany
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (26mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in September
Heuweiler, Germany
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Heuweiler, Germany
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 24min).

Average sunshine days in September
Heuweiler, Germany
  • Average sunshine days in September: 20.7 days

The month with the most sunshine days is October (22.4 days).
The month with the least sunshine days is June (14.9 days).

Average UV index in September
Heuweiler, Germany
  • Average UV index in September: 3

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).

Average cloud cover in September
Heuweiler, Germany
  • Average cloud cover in September: 36

The months with the most cloud cover are January and December (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in September
Heuweiler, Germany
  • Average visibility in September: 8km

The months with the highest visibility are March, April, July and August (9km).
The months with the lowest visibility are January, February, May, June, September, October, November and December (8km).

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