September weather forecastRøyneberg, Norway
September
Weather in September
September, the first month of the autumn in Røyneberg, is also a moderate month, with an average temperature ranging between max 14.4°C (57.9°F) and min 12.2°C (54°F).Temperature
The average high-temperature for September is a mild 14.4°C (57.9°F), closely aligning with the temperature of the preceding month. Nights during September maintain a steady temperature, averaging at a fresh 12.2°C (54°F).Humidity
In Røyneberg, the average relative humidity in September is 79%.Rainfall
In Røyneberg, Norway, during September, the rain falls for 19.1 days and regularly aggregates up to 101mm (3.98") of precipitation. In Røyneberg, during the entire year, the rain falls for 210.4 days and collects up to 1002mm (39.45") of precipitation.Snowfall
In Røyneberg, snow does not fall in May through October.Daylight
In Røyneberg, the average length of the day in September is 12h and 49min.On the first day of September, sunrise is at 06:36 and sunset at 20:37. On the last day of the month, sunrise is at 07:41 and sunset at 19:13 CEST.
Sunshine
In September, the average sunshine is 6.8h.UV index
In Røyneberg, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: In September, a regular UV index of 3 translates into these guidelines:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Røyneberg, Norway
- Average high temperature in September: 14.4°C
The warmest month (with the highest average high temperature) is August (16.3°C).
The month with the lowest average high temperature is February (3.7°C).
- Average low temperature in September: 12.2°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is February (1.6°C).
Average pressure in September
Røyneberg, Norway
- Average pressure in September: 1012.6mbar
The month with the highest atmospheric pressure is May (1015mbar).
The month with the lowest atmospheric pressure is December (1006.7mbar).
Average wind speed in September
Røyneberg, Norway
- Average wind speed in September: 20.7km/h
The windiest month (with the highest average wind speed) is January (27.4km/h).
The calmest months (with the lowest average wind speed) are June and July (17.2km/h).
Average humidity in September
Røyneberg, Norway
- Average humidity in September: 79%
The month with the highest relative humidity is July (81%).
The months with the lowest relative humidity are October and November (76%).
Average rainfall in September
Røyneberg, Norway
- Average rainfall in September: 101mm
The wettest month (with the highest rainfall) is December (130mm).
The driest month (with the least rainfall) is June (43mm).
Average rainfall days in September
Røyneberg, Norway
- Average rainfall days in September: 19.1 days
The month with the highest number of rainy days is December (21.5 days).
The month with the least rainy days is June (13.3 days).
Average snowfall in September
Røyneberg, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is March (30mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Røyneberg, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Røyneberg, Norway
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 18min).
The month with the shortest days is December (Average daylight: 6h and 24min).
- Average sunshine in September: 6h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in September
Røyneberg, Norway
- Average sunshine days in September: 9.4 days
The month with the most sunshine days is June (14.4 days).
The month with the least sunshine days is December (5.8 days).
Average UV index in September
Røyneberg, 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, November and December (UV index 2).
Average cloud cover in September
Røyneberg, Norway
- Average cloud cover in September: 52
The month with the most cloud cover is December (Cloud cover 64).
The month with the least cloud cover is May (Cloud cover 44).
Average visibility in September
Røyneberg, Norway
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).
