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
Start of September brings a slight shift in the average high-temperature, dipping a bit from August's comfortable 18.9°C (66°F) to a still refreshing 14.7°C (58.5°F). Kolsås's average low-temperature in September is measured at a chilly 7.2°C (45°F).Humidity
In Kolsås, the average relative humidity in September is 81%.Rainfall
In Kolsås, in September, during 10.2 rainfall days, 27mm (1.06") of precipitation is typically accumulated. In Kolsås, Norway, during the entire year, the rain falls for 127.7 days and collects up to 307mm (12.09") of precipitation.Snowfall
June through September are months without snowfall in Kolsås.Daylight
The average length of the day in September in Kolsås, Norway, is 12h and 52min.On the first day of the month, sunrise is at 06:14 and sunset at 20:21. On the last day of September, sunrise is at 07:22 and sunset at 18:53 CEST.
Sunshine
In Kolsås, the average sunshine in September is 7.5h.UV index
The average daily maximum UV index in September in Kolsås, Norway, is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. Around midday, solar radiation is most harmful; hence, exposure should be limited. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Kolsås in September?
What is the average humidity in September in Kolsås?
How much does it rain in Kolsås in September?
When it does not snow in Kolsås?
Does it snow in Kolsås in September?
What is the average length of the day in September in Kolsås?
What time are sunrise and sunset in September in Kolsås?
How long on average sun shines in September in Kolsås?
How high is the UV index in September in Kolsås?
Average temperature in September
Kolsås, 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
Kolsås, 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
Kolsås, 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
Kolsås, 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
Kolsås, 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
Kolsås, 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
Kolsås, 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
Kolsås, 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
Kolsås, 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
Kolsås, 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
Kolsås, 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
Kolsås, 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
Kolsås, 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).
