September weather forecastByrknes, Norway
September
Weather in September
The first month of the autumn, September, is also a moderate month in Byrknes, Norway, with an average temperature fluctuating between 13.7°C (56.7°F) and 11.3°C (52.3°F).Temperature
The shift into September records an average high-temperature of a still mild 13.7°C (56.7°F), subtly varied from August's 15.5°C (59.9°F). September witnesses a minor deviation from daytime peaks, with an average nighttime temperature of 11.3°C (52.3°F).Humidity
In September, the average relative humidity is 78%.Rainfall
In Byrknes, in September, it is raining for 21.3 days, with typically 151mm (5.94") of accumulated precipitation. In Byrknes, during the entire year, the rain falls for 219.9 days and collects up to 1326mm (52.2") of precipitation.Snowfall
In Byrknes, Norway, snow does not fall in June through September.Daylight
In Byrknes, Norway, the average length of the day in September is 12h and 53min.On the first day of the month, sunrise is at 06:34 and sunset at 20:46. On the last day of September, sunrise is at 07:45 and sunset at 19:15 CEST.
Sunshine
The average sunshine in September is 5.7h.UV index
In Byrknes, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 3 during September leads to these instructions:
Be vigilant - Preventing sunburn is recommended. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Byrknes, Norway
- Average high temperature in September: 13.7°C
The warmest month (with the highest average high temperature) is August (15.5°C).
The month with the lowest average high temperature is February (4.1°C).
- Average low temperature in September: 11.3°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 (1.9°C).
Average pressure in September
Byrknes, Norway
- Average pressure in September: 1011.4mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1004.6mbar).
Average wind speed in September
Byrknes, Norway
- Average wind speed in September: 23.7km/h
The windiest month (with the highest average wind speed) is January (29km/h).
The calmest month (with the lowest average wind speed) is July (18.2km/h).
Average humidity in September
Byrknes, Norway
- Average humidity in September: 78%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is November (73%).
Average rainfall in September
Byrknes, Norway
- Average rainfall in September: 151mm
The wettest month (with the highest rainfall) is October (166mm).
The driest month (with the least rainfall) is June (49mm).
Average rainfall days in September
Byrknes, Norway
- Average rainfall days in September: 21.3 days
The month with the highest number of rainy days is December (21.5 days).
The month with the least rainy days is June (14.2 days).
Average snowfall in September
Byrknes, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is March (61mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Byrknes, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Byrknes, Norway
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 19h and 6min).
The month with the shortest days is December (Average daylight: 5h and 42min).
- Average sunshine in September: 5h and 42min
The months with the most sunshine are June and July (Average sunshine: 9h and 24min).
The month with the least sunshine is December (Average sunshine: 2h and 6min).
Average sunshine days in September
Byrknes, Norway
- Average sunshine days in September: 7.4 days
The month with the most sunshine days is June (14.3 days).
The month with the least sunshine days is December (5.7 days).
Average UV index in September
Byrknes, 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, February, March, October, November and December (UV index 2).
Average cloud cover in September
Byrknes, Norway
- Average cloud cover in September: 60
The months with the most cloud cover are January and December (Cloud cover 69).
The month with the least cloud cover is May (Cloud cover 48).
Average visibility in September
Byrknes, Norway
- Average visibility in September: 9km
The months with the highest visibility are May, June, July and August (10km).
The months with the lowest visibility are January, February, March, April, September, October, November and December (9km).
