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
The beginning of September subtly marks a decrease in the average high-temperature, transitioning from a warm 23.8°C (74.8°F) in August to a comfortable 19.1°C (66.4°F). Lahnstein witnesses a consistent average low-temperature of 9.2°C (48.6°F) throughout September.Humidity
In September, the average relative humidity in Lahnstein, Germany, is 79%.Rainfall
In September, in Lahnstein, the rain falls for 9.5 days. Throughout September, 16mm (0.63") of precipitation is accumulated. In Lahnstein, during the entire year, the rain falls for 136.4 days and collects up to 244mm (9.61") of precipitation.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day in Lahnstein is 12h and 37min.On the first day of September in Lahnstein, sunrise is at 06:44 and sunset at 20:13. On the last day of the month, sunrise is at 07:28 and sunset at 19:09 CEST.
Sunshine
The average sunshine in September in Lahnstein is 8.4h.UV index
In Lahnstein, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum UV index of 3 in September translates into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Lahnstein?
What is the average humidity in September in Lahnstein?
How much does it rain in Lahnstein in September?
When it does not snow in Lahnstein?
What is the average length of the day in September in Lahnstein?
What time are sunrise and sunset in September in Lahnstein?
How long on average sun shines in September in Lahnstein?
What is the UV index reading in September in Lahnstein?
Average temperature in September
Lahnstein, Germany
- Average high temperature in September: 19.1°C
The warmest month (with the highest average high temperature) is July (24°C).
The month with the lowest average high temperature is January (3.3°C).
- Average low temperature in September: 9.2°C
The month with the highest average low temperature is August (12.5°C).
The coldest month (with the lowest average low temperature) is February (-1.3°C).
Average pressure in September
Lahnstein, Germany
- Average pressure in September: 1017.9mbar
The month with the highest atmospheric pressure is September (1017.9mbar).
The month with the lowest atmospheric pressure is November (1014.1mbar).
Average wind speed in September
Lahnstein, Germany
- Average wind speed in September: 8.4km/h
The windiest month (with the highest average wind speed) is February (11.2km/h).
The calmest month (with the lowest average wind speed) is August (8.1km/h).
Average humidity in September
Lahnstein, Germany
- Average humidity in September: 79%
The months with the highest relative humidity are January and December (90%).
The months with the lowest relative humidity are July and August (73%).
Average rainfall in September
Lahnstein, Germany
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is August (33mm).
The driest month (with the least rainfall) is January (15mm).
Average rainfall days in September
Lahnstein, Germany
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is February (9.3 days).
Average snowfall in September
Lahnstein, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (24mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Lahnstein, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lahnstein, Germany
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Lahnstein, Germany
- Average sunshine days in September: 17.5 days
The months with the most sunshine days are April, September and October (17.5 days).
The month with the least sunshine days is December (12.4 days).
Average UV index in September
Lahnstein, 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, February, November and December (UV index 2).
Average cloud cover in September
Lahnstein, Germany
- Average cloud cover in September: 40
The month with the most cloud cover is December (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Lahnstein, Germany
- Average visibility in September: 8km
The months with the highest visibility are April and August (9km).
The months with the lowest visibility are January, February, October, November and December (7km).
