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
The average high-temperature shows a slight dip in September, from August's cool 12.2°C (54°F) to a frosty 8.9°C (48°F). Birtavarre notes a consistent average low-temperature of 4.9°C (40.8°F) during September nights.Humidity
In September, the average relative humidity is 82%.Rainfall
September is the month with the most rainfall. Rain falls for 18.4 days and accumulates 82mm (3.23") of precipitation.Snowfall
January through June, September through December are months with snowfall in Birtavarre. September is the first month it typically snows. Throughout September, in the average 1 snowfall days, it receives 25mm (0.98") of snow. Throughout the year, in Birtavarre, there are 121.3 snowfall days, and 2378mm (93.62") of snow is accumulated.Daylight
In September, the average length of the day is 13h and 19min.On the first day of September, sunrise is at 04:57 and sunset at 20:15. On the last day of the month, sunrise is at 06:49 and sunset at 18:03 CEST.
Sunshine
The average sunshine in September is 6.7h.UV index
The average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 2 during September translates into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September in Birtavarre?
What is the rainiest month?
How much does it rain in Birtavarre in September?
When does it start snowing?
How many hours of daylight does Birtavarre have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Birtavarre have in September?
What is the UV index reading in September?
Average temperature in September
Birtavarre, Norway
- Average high temperature in September: 8.9°C
The warmest month (with the highest average high temperature) is July (12.8°C).
The month with the lowest average high temperature is January (-4.8°C).
- Average low temperature in September: 4.9°C
The month with the highest average low temperature is July (7.8°C).
The coldest month (with the lowest average low temperature) is February (-9.1°C).
Average pressure in September
Birtavarre, Norway
- Average pressure in September: 1008.7mbar
The month with the highest atmospheric pressure is May (1013.9mbar).
The month with the lowest atmospheric pressure is December (1001.2mbar).
Average wind speed in September
Birtavarre, Norway
- Average wind speed in September: 13.3km/h
The windiest month (with the highest average wind speed) is January (20.4km/h).
The calmest month (with the lowest average wind speed) is July (10.3km/h).
Average humidity in September
Birtavarre, Norway
- Average humidity in September: 82%
The month with the highest relative humidity is April (87%).
The months with the lowest relative humidity are July and August (80%).
Average rainfall in September
Birtavarre, Norway
- Average rainfall in September: 82mm
The wettest month (with the highest rainfall) is September (82mm).
The driest month (with the least rainfall) is May (57mm).
Average rainfall days in September
Birtavarre, Norway
- Average rainfall days in September: 18.4 days
The month with the highest number of rainy days is July (20.6 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in September
Birtavarre, Norway
- Average snowfall in September: 25mm
The month with the highest snowfall is March (470mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Birtavarre, Norway
- Average snowfall days in September: 1 days
The month with the highest number of snowfall days is March (22.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Birtavarre, Norway
- Average daylight in September: 13h and 2min
The month with the longest days is August (Average daylight: 17h and 54min).
The months with the shortest days are June and December (Average daylight: 0h and 0min).
- Average sunshine in September: 6h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 0h and 0min).
Average sunshine days in September
Birtavarre, Norway
- Average sunshine days in September: 7.6 days
The month with the most sunshine days is January (12.4 days).
The month with the least sunshine days is March (6.2 days).
Average UV index in September
Birtavarre, Norway
- Average UV index in September: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are March and April (UV index 1).
Average cloud cover in September
Birtavarre, Norway
- Average cloud cover in September: 55
The month with the most cloud cover is March (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 53).
Average visibility in September
Birtavarre, Norway
- Average visibility in September: 9km
The months with the highest visibility are January, February, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are March, April and May (8km).
