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
September signals a slight drop in average high-temperature, sliding from August's enjoyable 18.9°C (66°F) to a mild 14.7°C (58.5°F). During September, Asker consistently records a temperature low averaging a chilly 7.2°C (45°F).Humidity
In September, the average relative humidity is 81%.Rainfall
In Asker, in September, during 10.2 rainfall days, 27mm (1.06") of precipitation is typically accumulated. Throughout the year, there are 127.7 rainfall days, and 307mm (12.09") of precipitation is accumulated.Snowfall
In Asker, snow does not fall in June through September.Daylight
The average length of the day in September in Asker is 12h and 52min.On the first day of the month, sunrise is at 06:15 and sunset at 20:21. On the last day of September, in Asker, sunrise is at 07:22 and sunset at 18:53 CEST.
Sunshine
In September, the average sunshine in Asker is 7.5h.UV index
The average daily maximum UV index in September in Asker, Norway, is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. It's recommended to limit sun exposure when its radiation is at its peak during midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Asker in September?
What is the average humidity in September in Asker?
How much does it rain in Asker in September?
When it does not snow in Asker?
Does it snow in Asker in September?
How many hours of daylight does Asker have in September?
When are sunrise and sunset in September in Asker?
How many hours of sunshine does Asker have in September?
What is the UV index intensity in September in Asker?
Average temperature in September
Asker, Norway
- Average high temperature in September: 14.7°C
The warmest month (with the highest average high temperature) is July (20.4°C).
The month with the lowest average high temperature is January (-2.4°C).
- Average low temperature in September: 7.2°C
The month with the highest average low temperature is July (10.8°C).
The coldest month (with the lowest average low temperature) is February (-7.8°C).
Average pressure in September
Asker, Norway
- Average pressure in September: 1012.6mbar
The month with the highest atmospheric pressure is April (1014.5mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Asker, Norway
- Average wind speed in September: 9.5km/h
The windiest month (with the highest average wind speed) is January (9.9km/h).
The calmest month (with the lowest average wind speed) is August (8.3km/h).
Average humidity in September
Asker, Norway
- Average humidity in September: 81%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Asker, Norway
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is July (40mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in September
Asker, Norway
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Asker, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is March (73mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Asker, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Asker, Norway
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 42min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in September: 7h and 3min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 12min).
Average sunshine days in September
Asker, Norway
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is December (18.3 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in September
Asker, Norway
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 4).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in September
Asker, Norway
- Average cloud cover in September: 49
The month with the most cloud cover is February (Cloud cover 65).
The month with the least cloud cover is June (Cloud cover 45).
Average visibility in September
Asker, Norway
- Average visibility in September: 8km
The months with the highest visibility are April, May and June (9km).
The month with the lowest visibility is February (6km).
