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
In Gråträsk, the average high-temperature in September decreases from a comfortable 16.1°C (61°F) in August to a fresh 10.8°C (51.4°F). Gråträsk's temperature tends to fall to an average low of 4.3°C (39.7°F) during the nights of September.Humidity
In Gråträsk, the average relative humidity in September is 82%.Rainfall
In Gråträsk, during September, the rain falls for 13.5 days and regularly aggregates up to 35mm (1.38") of precipitation. Throughout the year, there are 114.3 rainfall days, and 470mm (18.5") of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall in Gråträsk. September is the first month it typically snows in Gråträsk, Sweden. Throughout September, in the average 1.4 snowfall days, it receives 10mm (0.39") of snow. Throughout the year, in Gråträsk, there are 130.5 snowfall days, and 1669mm (65.71") of snow is accumulated.Daylight
In September, the average length of the day is 13h and 5min.On the first day of September, sunrise is at 05:20 and sunset at 20:01. On the last day of the month, sunrise is at 06:49 and sunset at 18:11 CEST.
Sunshine
In Gråträsk, the average sunshine in September is 6.7h.UV index
In September, the average daily maximum UV index in Gråträsk is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 2 in September interprets into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Gråträsk in September?
What is the average humidity in September in Gråträsk?
How many days does it rain in September in Gråträsk?
When does it start snowing in Gråträsk?
How many hours of daylight does Gråträsk have in September?
When is the sunrise / sunset in September in Gråträsk?
How many hours of sunshine does Gråträsk have in September?
How high is the UV index in September in Gråträsk?
Average temperature in September
Gråträsk, Sweden
- Average high temperature in September: 10.8°C
The warmest month (with the highest average high temperature) is July (18.3°C).
The month with the lowest average high temperature is January (-8°C).
- Average low temperature in September: 4.3°C
The month with the highest average low temperature is July (9.8°C).
The coldest month (with the lowest average low temperature) is January (-13.4°C).
Average pressure in September
Gråträsk, Sweden
- Average pressure in September: 1011mbar
The month with the highest atmospheric pressure is May (1014.3mbar).
The month with the lowest atmospheric pressure is December (1005.1mbar).
Average wind speed in September
Gråträsk, Sweden
- Average wind speed in September: 11.1km/h
The windiest month (with the highest average wind speed) is March (12.4km/h).
The calmest months (with the lowest average wind speed) are July and August (10km/h).
Average humidity in September
Gråträsk, Sweden
- Average humidity in September: 82%
The months with the highest relative humidity are January and February (95%).
The month with the lowest relative humidity is June (64%).
Average rainfall in September
Gråträsk, Sweden
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is July (63mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in September
Gråträsk, Sweden
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in September
Gråträsk, Sweden
- Average snowfall in September: 10mm
The month with the highest snowfall is December (327mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Gråträsk, Sweden
- Average snowfall days in September: 1.4 days
The month with the highest number of snowfall days is January (21.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Gråträsk, Sweden
- Average daylight in September: 13h and 1min
The month with the longest days is June (Average daylight: 22h and 18min).
The month with the shortest days is December (Average daylight: 3h and 36min).
- Average sunshine in September: 6h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 1h and 18min).
Average sunshine days in September
Gråträsk, Sweden
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is October (14.6 days).
The months with the least sunshine days are March and December (9.4 days).
Average UV index in September
Gråträsk, Sweden
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in September
Gråträsk, Sweden
- Average cloud cover in September: 56
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is June (Cloud cover 48).
Average visibility in September
Gråträsk, Sweden
- Average visibility in September: 8km
The month with the highest visibility is June (10km).
The month with the lowest visibility is January (5km).
