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 sea temperature 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 advent of September brings a subtle shift in temperature, with the average high moving from an enjoyable 18.3°C (64.9°F) in August to a moderate 15.2°C (59.4°F). A consistent nighttime average temperature of 11°C (51.8°F) is maintained during September.Humidity
In September, the average relative humidity in Risor is 77%.Rainfall
In Risor, in September, it is raining for 10.6 days, with typically 22mm (0.87") of accumulated precipitation. In Risor, during the entire year, the rain falls for 111 days and collects up to 268mm (10.55") of precipitation.Snowfall
May through September are months without snowfall.Sea temperature
In Risor, in September, the average water temperature is 15.9°C (60.6°F).Note: In water of 15.9°C (60.6°F), the majority of people do not enjoy swimming. Breathing becomes increasingly hard to manage as the temperature drops from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day is 12h and 49min.On the first day of September in Risor, sunrise is at 06:22 and sunset at 20:23. On the last day of the month, sunrise is at 07:26 and sunset at 18:59 CEST.
Sunshine
In September, the average sunshine in Risor is 8.1h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Frequently asked questions
What is the average September temperature in Risor?
What is the average humidity in September in Risor?
How many days does it rain in September in Risor?
When it does not snow in Risor?
Does it snow in Risor in September?
How cold is the water in September in Risor?
What is the average length of the day in September in Risor?
When is the sunrise / sunset in September in Risor?
How long on average sun shines in September in Risor?
How high is the UV index in September in Risor?
Average temperature in September
Risor, Norway
- Average high temperature in September: 15.2°C
The warmest month (with the highest average high temperature) is July (18.7°C).
The month with the lowest average high temperature is February (1.2°C).
- Average low temperature in September: 11°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is February (-1.8°C).
Average pressure in September
Risor, Norway
- Average pressure in September: 1012.8mbar
The month with the highest atmospheric pressure is April (1014.5mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in September
Risor, Norway
- Average wind speed in September: 18.8km/h
The windiest month (with the highest average wind speed) is November (21.6km/h).
The calmest month (with the lowest average wind speed) is June (15.6km/h).
Average humidity in September
Risor, Norway
- Average humidity in September: 77%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are May and June (71%).
Average rainfall in September
Risor, Norway
- Average rainfall in September: 22mm
The wettest months (with the highest rainfall) are November and December (33mm).
The driest month (with the least rainfall) is April (10mm).
Average rainfall days in September
Risor, Norway
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is November (12.4 days).
The month with the least rainy days is February (6.6 days).
Average snowfall in September
Risor, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is January (50mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Risor, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in September
Risor, Norway
- Average sea temperature in September: 15.9°C
The best month for swimming (with the highest average sea temperature) is August (18.3°C).
The coldest month (with the lowest average sea temperature) is March (3.2°C).
Average daylight in September /
Average sunshine in September
Risor, Norway
- Average daylight in September: 12h and 5min
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: 8h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Risor, Norway
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is April (20.5 days).
The month with the least sunshine days is November (11.2 days).
Average UV index in September
Risor, Norway
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Risor, Norway
- Average cloud cover in September: 42
The month with the most cloud cover is November (Cloud cover 61).
The months with the least cloud cover are June and July (Cloud cover 34).
Average visibility in September
Risor, Norway
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).
Risor, Norway
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