September weather forecastRøldal, Norway
September
Weather in September
September, the first month of the autumn in Røldal, is also a frosty month, with an average temperature ranging between min 2.8°C (37°F) and max 7.7°C (45.9°F).Temperature
As August transitions into September, Røldal sees a gentle drop in the average high-temperature, transitioning from a fresh 11.3°C (52.3°F) to a chilly 7.7°C (45.9°F). A consistent average low of 2.8°C (37°F) is noted throughout September, only a small step down from its daytime high.Humidity
In Røldal, the average relative humidity in September is 88%.Rainfall
In Røldal, in September, during 20.1 rainfall days, 135mm (5.31") of precipitation is typically accumulated. Throughout the year, there are 136.8 rainfall days, and 1422mm (55.98") of precipitation is accumulated.Snowfall
January through December are months with snowfall. In Røldal, in September, snow falls for 7.1 days, with typically accumulated 147mm (5.79") of snow. In Røldal, during the entire year, snow falls for 184.1 days and aggregates up to 5780mm (227.56") of snow.Daylight
In Røldal, the average length of the day in September is 12h and 51min.On the first day of September, sunrise is at 06:29 and sunset at 20:35. On the last day of the month, sunrise is at 07:37 and sunset at 19:07 CEST.
Sunshine
In September, the average sunshine is 4.3h.UV index
The average daily maximum UV index in September in Røldal is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, a regular UV index of 2 translates into these guidelines:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Røldal, Norway
- Average high temperature in September: 7.7°C
The warmest month (with the highest average high temperature) is July (12.5°C).
The month with the lowest average high temperature is January (-6.2°C).
- Average low temperature in September: 2.8°C
The month with the highest average low temperature is July (6.3°C).
The coldest month (with the lowest average low temperature) is February (-11.9°C).
Average pressure in September
Røldal, Norway
- Average pressure in September: 1012.4mbar
The month with the highest atmospheric pressure is April (1014.8mbar).
The month with the lowest atmospheric pressure is December (1007.2mbar).
Average wind speed in September
Røldal, Norway
- Average wind speed in September: 13.8km/h
The windiest month (with the highest average wind speed) is January (14.8km/h).
The calmest month (with the lowest average wind speed) is May (10.5km/h).
Average humidity in September
Røldal, Norway
- Average humidity in September: 88%
The months with the highest relative humidity are January, March and December (95%).
The month with the lowest relative humidity is July (80%).
Average rainfall in September
Røldal, Norway
- Average rainfall in September: 135mm
The wettest month (with the highest rainfall) is December (167mm).
The driest month (with the least rainfall) is April (73mm).
Average rainfall days in September
Røldal, Norway
- Average rainfall days in September: 20.1 days
The month with the highest number of rainy days is August (24.8 days).
The month with the least rainy days is February (1.7 days).
Average snowfall in September
Røldal, Norway
- Average snowfall in September: 147mm
The month with the highest snowfall is December (1038mm).
The month with the least snowfall is August (3mm).
Average snowfall days in September
Røldal, Norway
- Average snowfall days in September: 7.1 days
The month with the highest number of snowfall days is December (23 days).
The month with the least snowfall days is August (1 days).
Average daylight in September /
Average sunshine in September
Røldal, Norway
- Average daylight in September: 12h and 54min
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: 4h and 18min
The month with the most sunshine is June (Average sunshine: 7h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 12min).
Average sunshine days in September
Røldal, Norway
- Average sunshine days in September: 5.7 days
The months with the most sunshine days are January and April (7.8 days).
The month with the least sunshine days is August (3.8 days).
Average UV index in September
Røldal, Norway
- Average UV index in September: 2
The months with the highest UV index are June and August (UV index 3).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in September
Røldal, Norway
- Average cloud cover in September: 74
The month with the most cloud cover is December (Cloud cover 82).
The month with the least cloud cover is June (Cloud cover 62).
Average visibility in September
Røldal, Norway
- Average visibility in September: 8km
The months with the highest visibility are June, July, August and September (8km).
The month with the lowest visibility is December (5km).
