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 commencement of September records an average high-temperature of a still moderate 13.5°C (56.3°F), barely varying from August's 15.1°C (59.2°F). In September, Forsnes temperatures settle at a low of 11.4°C (52.5°F) during the nights, reflecting a minor change from daytime highs.Humidity
In September, the average relative humidity is 77%.Rainfall
In Forsnes, during September, the rain falls for 18.7 days and regularly aggregates up to 77mm (3.03") of precipitation. Throughout the year, there are 206.7 rainfall days, and 787mm (30.98") of precipitation is accumulated.Snowfall
In Forsnes, snow does not fall in June through September.Daylight
In Forsnes, the average length of the day in September is 12h and 59min.On the first day of September, sunrise is at 06:12 and sunset at 20:39. On the last day of the month, sunrise is at 07:33 and sunset at 18:58 CEST.
Sunshine
In Forsnes, the average sunshine in September is 6.8h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Forsnes have in September?
What is the UV index reading in September in Forsnes?
Average temperature in September
Forsnes, Norway
- Average high temperature in September: 13.5°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 (4.7°C).
- Average low temperature in September: 11.4°C
The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is February (2.4°C).
Average pressure in September
Forsnes, Norway
- Average pressure in September: 1009.7mbar
The month with the highest atmospheric pressure is May (1014.3mbar).
The month with the lowest atmospheric pressure is December (1002mbar).
Average wind speed in September
Forsnes, Norway
- Average wind speed in September: 23.5km/h
The windiest month (with the highest average wind speed) is December (31.1km/h).
The calmest month (with the lowest average wind speed) is July (18.9km/h).
Average humidity in September
Forsnes, Norway
- Average humidity in September: 77%
The month with the highest relative humidity is July (82%).
The months with the lowest relative humidity are January and November (71%).
Average rainfall in September
Forsnes, Norway
- Average rainfall in September: 77mm
The wettest month (with the highest rainfall) is December (98mm).
The driest month (with the least rainfall) is June (42mm).
Average rainfall days in September
Forsnes, Norway
- Average rainfall days in September: 18.7 days
The month with the highest number of rainy days is December (20.5 days).
The month with the least rainy days is June (14.3 days).
Average snowfall in September
Forsnes, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is February (67mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Forsnes, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Forsnes, Norway
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 20h and 24min).
The month with the shortest days is December (Average daylight: 4h and 42min).
- Average sunshine in September: 6h and 5min
The months with the most sunshine are June and July (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 24min).
Average sunshine days in September
Forsnes, Norway
- Average sunshine days in September: 9.5 days
The month with the most sunshine days is May (12.5 days).
The month with the least sunshine days is December (6.5 days).
Average UV index in September
Forsnes, 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
Forsnes, 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 52).
Average visibility in September
Forsnes, Norway
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February, March, April and December (9km).
