September weather forecastGrums, Sweden
September
Weather in September
September, the first month of the autumn in Grums, is still a refreshing month, with an average temperature varying between 15.5°C (59.9°F) and 9.8°C (49.6°F).Temperature
September is marked by a subtle drop in average high-temperatures, transitioning from a comfortable 19.6°C (67.3°F) in August to a mild 15.5°C (59.9°F). In September, the average low-temperature is a chilly 9.8°C (49.6°F).Humidity
In Grums, the average relative humidity in September is 79%.Rainfall
In Grums, in September, it is raining for 14.5 days, with typically 42mm (1.65") of accumulated precipitation. In Grums, Sweden, during the entire year, the rain falls for 153.4 days and collects up to 510mm (20.08") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Grums, the average length of the day in September is 12h and 50min.On the first day of September in Grums, Sweden, sunrise is at 06:05 and sunset at 20:09. On the last day of the month, sunrise is at 07:11 and sunset at 18:43 CEST.
Sunshine
In September, the average sunshine is 7.9h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 3 in September translates into this advice:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grums, Sweden
- Average high temperature in September: 15.5°C
The warmest month (with the highest average high temperature) is July (20.7°C).
The month with the lowest average high temperature is January (-0.3°C).
- Average low temperature in September: 9.8°C
The month with the highest average low temperature is July (13.2°C).
The coldest month (with the lowest average low temperature) is February (-3.8°C).
Average pressure in September
Grums, Sweden
- Average pressure in September: 1013.1mbar
The months with the highest atmospheric pressure are April and May (1014.2mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Grums, Sweden
- Average wind speed in September: 14.4km/h
The windiest month (with the highest average wind speed) is December (15.8km/h).
The calmest month (with the lowest average wind speed) is July (12.2km/h).
Average humidity in September
Grums, Sweden
- Average humidity in September: 79%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are May and June (70%).
Average rainfall in September
Grums, Sweden
- Average rainfall in September: 42mm
The wettest month (with the highest rainfall) is August (61mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
Grums, Sweden
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in September
Grums, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is January (133mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Grums, Sweden
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grums, Sweden
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 12min).
- Average sunshine in September: 7h and 54min
The month with the most sunshine is June (Average sunshine: 12h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in September
Grums, Sweden
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is April (17.1 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in September
Grums, Sweden
- 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 and December (UV index 1).
Average cloud cover in September
Grums, Sweden
- Average cloud cover in September: 44
The month with the most cloud cover is February (Cloud cover 66).
The months with the least cloud cover are June, July and August (Cloud cover 40).
Average visibility in September
Grums, Sweden
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February and March (8km).
