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
Weather in September
Temperature
The average high-temperature for September is a still moderate 13.4°C (56.1°F), closely aligning with the temperature of the preceding month. Roald, during September nights, records a temperature marginally cooler than the daytime average, at a cool 10.9°C (51.6°F).Humidity
In September, the average relative humidity is 76%.Rainfall
In September, in Roald, the rain falls for 19.5 days. Throughout September, 107mm (4.21") of precipitation is accumulated. Throughout the year, in Roald, Norway, there are 212.1 rainfall days, and 1083mm (42.64") of precipitation is accumulated.Snowfall
In Roald, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 57min.On the first day of the month, sunrise is at 06:24 and sunset at 20:45. On the last day of September, in Roald, sunrise is at 07:41 and sunset at 19:08 CEST.
Sunshine
In Roald, Norway, the average sunshine in September is 6.6h.UV index
In Roald, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 3 in September interprets into the following advice:
Take necessary precautions - Suggestions to elude sunburn are provided. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Roald in September?
What is the average humidity in September in Roald?
How much does it rain in Roald in September?
When it does not snow in Roald?
Does it snow in Roald in September?
How many hours of daylight does Roald have in September?
When are sunrise and sunset in September in Roald?
How many hours of sunshine does Roald have in September?
How high is the UV index in September in Roald?
Average temperature in September
Roald, 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
Roald, 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
Roald, 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
Roald, 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
Roald, 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
Roald, 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
Roald, 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
Roald, 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
Roald, Norway
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 19h and 54min).
The month with the shortest days is December (Average daylight: 5h and 6min).
- Average sunshine in September: 6h and 4min
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
Roald, 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
Roald, 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
Roald, 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
Roald, 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).
Roald, Norway
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