September weather forecast and climate
Ahrweiler, Germany

September, the first month of the autumn, in Ahrweiler, is still a comfortable month, with temperature in the range of an average low of 9.8°C (49.6°F) and an average high of 18.9°C (66°F).

Temperature

In September, the average high-temperature marginally drops, from a moderately hot 23.3°C (73.9°F) in August, to a comfortable 18.9°C (66°F). The average low-temperature, in September, is 9.8°C (49.6°F).

Humidity

The average relative humidity in Ahrweiler, Germany, is 79%.

Rainfall

April and September are months with the least rain when the rain falls for 10.5 days and typically aggregates up to 17mm (0.67") of rain.

Snowfall

April through October are months without snowfall in Ahrweiler.

Daylight

In Ahrweiler, the average length of the day in September is 12.6h.

Sunshine

In September, the average sunshine in Ahrweiler, Germany, is 8.4h.

UV index

The average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in September in Ahrweiler?

The average high-temperature, in September, in Ahrweiler, Germany, is 18.9°C (66°F), while the average low-temperature is 9.8°C (49.6°F).

What is the average humidity in September in Ahrweiler?

In Ahrweiler, Germany, the average relative humidity in September is 79%.

How much does it rain in Ahrweiler in September?

In Ahrweiler, Germany, during September, the rain falls for 10.5 days and regularly aggregates up to 17mm (0.67") of precipitation.

What is the driest month in Ahrweiler?

April and September are months with the least rain in Ahrweiler when the rain falls for 10.5 days and typically aggregates up to 17mm (0.67") of rain.

When it does not snow in Ahrweiler?

In Ahrweiler snow does not fall in April through October.

How many hours of daylight does Ahrweiler have in September?

The average length of the day in September in Ahrweiler, Germany, is 12.6h.

How many hours of sunshine does Ahrweiler have in September?

In Ahrweiler, the average sunshine in September is 8.4h.

How high is the UV index in September in Ahrweiler?

The average daily maximum UV index in September in Ahrweiler, Germany, is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.
Average temperature in September - Ahrweiler, Germany
  • Average high temperature in September: 18.9°C

The warmest month (with the highest average high temperature) is July (23.5°C).
The month with the lowest average high temperature is January (4°C).

  • Average low temperature in September: 9.8°C

The month with the highest average low temperature is August (13.1°C).
The coldest month (with the lowest average low temperature) is January (-0.6°C).

Average pressure in September - Ahrweiler, Germany
  • Average pressure in September: 1017.8mbar

The month with the highest atmospheric pressure is September (1017.8mbar).
The month with the lowest atmospheric pressure is November (1013.7mbar).

Average wind speed in September - Ahrweiler, Germany
  • Average wind speed in September: 9km/h

The windiest month (with the highest average wind speed) is February (12.6km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).

Average humidity in September - Ahrweiler, Germany
  • Average humidity in September: 79%

The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (73%).

Average rainfall in September - Ahrweiler, Germany
  • Average rainfall in September: 17mm

The wettest months (with the highest rainfall) are May and August (32mm).
The driest months (with the least rainfall) are April and September (17mm).

Average rainfall days in September - Ahrweiler, Germany
  • Average rainfall days in September: 10.5 days

The month with the highest number of rainy days is June (14.9 days).
The month with the least rainy days is February (8.4 days).

Average snowfall in September - Ahrweiler, Germany
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (32mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in September - Ahrweiler, Germany
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (6.6 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - Ahrweiler, Germany
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.4h).
The month with the shortest days is December (Average daylight: 8.1h).

  • Average sunshine in September: 8.4h

The month with the most sunshine is July (Average sunshine: 9.9h).
The month with the least sunshine is December (Average sunshine: 3.8h).

Average sunshine days in September - Ahrweiler, Germany
  • Average sunshine days in September: 15.6 days

The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is June (12 days).

Average UV index in September - Ahrweiler, Germany
  • Average UV index in September: 3

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

Average cloud cover in September - Ahrweiler, Germany
  • Average cloud cover in September: 40

The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 37).

Average visibility in September - Ahrweiler, Germany
  • Average visibility in September: 8km

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