September weather forecastAlnes, Norway
September
Weather in September
The first month of the autumn, September, is also a moderate month in Alnes, Norway, with an average temperature varying between 10.9°C (51.6°F) and 13.4°C (56.1°F).Temperature
The advent of September presents an average high-temperature of a still refreshing 13.4°C (56.1°F), maintaining a close correlation with the preceding month. Alnes notes an average temperature descent to a fresh 10.9°C (51.6°F) in September, a small shift from its daytime peak.Humidity
In Alnes, the average relative humidity in September is 76%.Rainfall
In September, the rain falls for 19.5 days. Throughout September, 107mm (4.21") of precipitation is accumulated. In Alnes, during the entire year, the rain falls for 212.1 days and collects up to 1083mm (42.64") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Alnes is 12h and 57min.On the first day of September, sunrise is at 06:25 and sunset at 20:46. On the last day of the month, sunrise is at 07:42 and sunset at 19:09 CEST.
Sunshine
In Alnes, the average sunshine in September is 6.6h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Alnes, Norway
- Average high temperature in September: 13.4°C
The warmest month (with the highest average high temperature) is August (15.1°C).
The month with the lowest average high temperature is February (3.7°C).
- Average low temperature in September: 10.9°C
The month with the highest average low temperature is August (12.8°C).
The coldest month (with the lowest average low temperature) is February (1.8°C).
Average pressure in September
Alnes, Norway
- Average pressure in September: 1010.3mbar
The month with the highest atmospheric pressure is May (1014.4mbar).
The month with the lowest atmospheric pressure is December (1002.9mbar).
Average wind speed in September
Alnes, Norway
- Average wind speed in September: 19.7km/h
The windiest month (with the highest average wind speed) is December (26.9km/h).
The calmest month (with the lowest average wind speed) is August (15.1km/h).
Average humidity in September
Alnes, Norway
- Average humidity in September: 76%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is November (70%).
Average rainfall in September
Alnes, Norway
- Average rainfall in September: 107mm
The wettest month (with the highest rainfall) is December (134mm).
The driest month (with the least rainfall) is June (47mm).
Average rainfall days in September
Alnes, Norway
- Average rainfall days in September: 19.5 days
The month with the highest number of rainy days is August (20.4 days).
The months with the least rainy days are February and June (15.3 days).
Average snowfall in September
Alnes, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is February (134mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Alnes, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Alnes, Norway
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 19h and 48min).
The month with the shortest days is December (Average daylight: 5h and 12min).
- Average sunshine in September: 6h and 36min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 2h and 18min).
Average sunshine days in September
Alnes, Norway
- Average sunshine days in September: 8.9 days
The month with the most sunshine days is June (11.8 days).
The month with the least sunshine days is December (7.2 days).
Average UV index in September
Alnes, Norway
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Alnes, Norway
- Average cloud cover in September: 54
The month with the most cloud cover is March (Cloud cover 64).
The month with the least cloud cover is May (Cloud cover 51).
Average visibility in September
Alnes, Norway
- Average visibility in September: 10km
The months with the highest visibility are June and September (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, October, November and December (9km).
