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 arrival of September correlates with a minor temperature reduction, down from August's refreshing 15.1°C (59.2°F) to a cool 10.9°C (51.6°F). In September, the nighttime temperature lowers to an average of 3.7°C (38.7°F).Humidity
In Flatdal, the average relative humidity in September is 83%.Rainfall
In September, the rain falls for 15.2 days. Throughout September, 51mm (2.01") of precipitation is accumulated. In Flatdal, during the entire year, the rain falls for 124.7 days and collects up to 584mm (22.99") of precipitation.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows in Flatdal. Throughout September, in the average 0.8 snowfall days, it receives 11mm (0.43") of snow. Throughout the year, there are 110 snowfall days, and 1881mm (74.06") of snow is accumulated.Daylight
The average length of the day in September is 12h and 51min.On the first day of the month, sunrise is at 06:23 and sunset at 20:27. On the last day of September, in Flatdal, Norway, sunrise is at 07:29 and sunset at 19:01 CEST.
Sunshine
In September, the average sunshine is 7.2h.UV index
In September, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a regular UV index of 2 translates into these guidelines:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Flatdal?
What is the average humidity in September in Flatdal?
How many days does it rain in September in Flatdal?
When does it start snowing in Flatdal?
What is the average length of the day in September in Flatdal?
What time are sunrise and sunset in September in Flatdal?
How long on average sun shines in September in Flatdal?
What is the UV index reading in September in Flatdal?
Average temperature in September
Flatdal, Norway
- Average high temperature in September: 10.9°C
The warmest month (with the highest average high temperature) is July (16.8°C).
The month with the lowest average high temperature is January (-4.9°C).
- Average low temperature in September: 3.7°C
The month with the highest average low temperature is July (7.3°C).
The coldest month (with the lowest average low temperature) is January (-10.8°C).
Average pressure in September
Flatdal, Norway
- Average pressure in September: 1012.6mbar
The month with the highest atmospheric pressure is April (1014.8mbar).
The month with the lowest atmospheric pressure is December (1007.7mbar).
Average wind speed in September
Flatdal, Norway
- Average wind speed in September: 9.8km/h
The windiest month (with the highest average wind speed) is December (10.3km/h).
The calmest month (with the lowest average wind speed) is August (8.3km/h).
Average humidity in September
Flatdal, Norway
- Average humidity in September: 83%
The months with the highest relative humidity are January, February and March (93%).
The month with the lowest relative humidity is June (70%).
Average rainfall in September
Flatdal, Norway
- Average rainfall in September: 51mm
The wettest month (with the highest rainfall) is July (82mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Flatdal, Norway
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is July (21.2 days).
The month with the least rainy days is February (3 days).
Average snowfall in September
Flatdal, Norway
- Average snowfall in September: 11mm
The month with the highest snowfall is December (305mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Flatdal, Norway
- Average snowfall days in September: 0.8 days
The months with the highest number of snowfall days are January and February (16.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Flatdal, Norway
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 12min).
- Average sunshine in September: 7h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in September
Flatdal, Norway
- Average sunshine days in September: 11.7 days
The month with the most sunshine days is April (16.3 days).
The months with the least sunshine days are July and August (7.5 days).
Average UV index in September
Flatdal, Norway
- Average UV index in September: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, February, March, October and December (UV index 1).
Average cloud cover in September
Flatdal, Norway
- Average cloud cover in September: 51
The months with the most cloud cover are February and November (Cloud cover 59).
The month with the least cloud cover is June (Cloud cover 41).
Average visibility in September
Flatdal, Norway
- Average visibility in September: 8km
The months with the highest visibility are June and July (9km).
The months with the lowest visibility are January, February, March, November and December (6km).
