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 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
September
Weather in September
Temperature
As September commences, the average high-temperature subtly reduces, transitioning from a warm 23.4°C (74.1°F) in August to a refreshing 18.5°C (65.3°F). In Merkers, the September nights cool down to an average low of 9.3°C (48.7°F).Humidity
In September, the average relative humidity is 78%.Rainfall
In Merkers, during September, the rain falls for 12.1 days and regularly aggregates up to 27mm (1.06") of precipitation. Throughout the year, there are 155.8 rainfall days, and 406mm (15.98") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Merkers, the average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 06:34 and sunset at 20:04. On the last day of September, sunrise is at 07:19 and sunset at 18:59 CEST.
Sunshine
In Merkers, the average sunshine in September is 8.1h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a regular UV index of 3 translates into these guidelines:
Ensure safety - Sun damage prevention is strongly urged. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Merkers in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When is the sunrise / sunset in September in Merkers?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Merkers, Germany
- Average high temperature in September: 18.5°C
The warmest months (with the highest average high temperature) are July and August (23.4°C).
The month with the lowest average high temperature is January (1.9°C).
- Average low temperature in September: 9.3°C
The month with the highest average low temperature is August (12.7°C).
The coldest month (with the lowest average low temperature) is January (-2.4°C).
Average pressure in September
Merkers, 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 (1014.3mbar).
Average wind speed in September
Merkers, Germany
- Average wind speed in September: 9.5km/h
The windiest month (with the highest average wind speed) is December (14.1km/h).
The calmest month (with the lowest average wind speed) is August (9.3km/h).
Average humidity in September
Merkers, Germany
- Average humidity in September: 78%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (72%).
Average rainfall in September
Merkers, Germany
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is June (52mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in September
Merkers, Germany
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in September
Merkers, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (70mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Merkers, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Merkers, Germany
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Merkers, Germany
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is April (16.8 days).
The month with the least sunshine days is June (10 days).
Average UV index in September
Merkers, Germany
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover in September
Merkers, Germany
- Average cloud cover in September: 43
The month with the most cloud cover is December (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Merkers, Germany
- Average visibility in September: 8km
The months with the highest visibility are April, June, July and August (9km).
The month with the lowest visibility is January (7km).
