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
A mild shift in the average high-temperature occurs in September, reducing from a warm 23.3°C (73.9°F) in August to a refreshing 18.8°C (65.8°F). During September, the temperature in Hamm tends to dip to an average of 10.6°C (51.1°F) at night.Humidity
The average relative humidity in September is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 8.3 days and accumulates 9mm (0.35") of precipitation.Snowfall
In Hamm, snow does not fall in May through October.Daylight
In September, the average length of the day in Hamm is 12h and 38min.On the first day of the month, sunrise is at 06:42 and sunset at 20:15. On the last day of September, sunrise is at 07:28 and sunset at 19:08 CEST.
Sunshine
The average sunshine in September in Hamm, Germany, is 8.4h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The UV index of 4 during September leads to these advisories:
Ensure safety - Recommendations to avert sunburn are presented. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Hamm?
What is the average humidity in September in Hamm?
What is the driest month in Hamm?
How many days does it rain in September in Hamm?
When it does not snow in Hamm?
What is the average length of the day in September in Hamm?
What time are sunrise and sunset in September in Hamm?
How many hours of sunshine does Hamm have in September?
What is the UV index intensity in September in Hamm?
Average temperature in September
Hamm, 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 (3.8°C).
- Average low temperature in September: 10.6°C
The month with the highest average low temperature is August (13.9°C).
The coldest month (with the lowest average low temperature) is January (-0.3°C).
Average pressure in September
Hamm, Germany
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1013mbar).
Average wind speed in September
Hamm, Germany
- Average wind speed in September: 10.6km/h
The windiest month (with the highest average wind speed) is December (15.7km/h).
The calmest months (with the lowest average wind speed) are July and August (10.3km/h).
Average humidity in September
Hamm, Germany
- Average humidity in September: 78%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (73%).
Average rainfall in September
Hamm, Germany
- Average rainfall in September: 9mm
The wettest month (with the highest rainfall) is December (17mm).
The driest month (with the least rainfall) is September (9mm).
Average rainfall days in September
Hamm, Germany
- Average rainfall days in September: 8.3 days
The months with the highest number of rainy days are May and July (13.3 days).
The month with the least rainy days is September (8.3 days).
Average snowfall in September
Hamm, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (16mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Hamm, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Hamm, Germany
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Hamm, Germany
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is October (18.7 days).
The months with the least sunshine days are May and June (13.8 days).
Average UV index in September
Hamm, Germany
- Average UV index in September: 4
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
Hamm, Germany
- Average cloud cover in September: 42
The month with the most cloud cover is December (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Hamm, Germany
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August and September (9km).
The months with the lowest visibility are January, October, November and December (8km).
