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
September heralds a minor drop in average high-temperature, sliding from August's enjoyable 19.5°C (67.1°F) to a mild 15.5°C (59.9°F). The nights of September anticipate an average low-temperature of 10.3°C (50.5°F).Humidity
The average relative humidity in September is 78%.Rainfall
In Gunnarskär, during September, the rain falls for 14.1 days and regularly aggregates up to 42mm (1.65") of precipitation. Throughout the year, there are 153.8 rainfall days, and 483mm (19.02") of precipitation is accumulated.Snowfall
In Gunnarskär, snow does not fall in June through September.Daylight
In Gunnarskär, the average length of the day in September is 12h and 50min.On the first day of September, sunrise is at 06:04 and sunset at 20:07. On the last day of the month, sunrise is at 07:10 and sunset at 18:41 CEST.
Sunshine
The average sunshine in September is 8.1h.UV index
In Gunnarskär, Sweden, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 4 during September translates into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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?
When are sunrise and sunset in September?
How many hours of sunshine does Gunnarskär have in September?
How high is the UV index in September?
Average temperature in September
Gunnarskär, Sweden
- Average high temperature in September: 15.5°C
The warmest month (with the highest average high temperature) is July (20.6°C).
The month with the lowest average high temperature is January (-0.2°C).
- Average low temperature in September: 10.3°C
The month with the highest average low temperature is July (13.6°C).
The coldest month (with the lowest average low temperature) is February (-3.3°C).
Average pressure in September
Gunnarskär, Sweden
- Average pressure in September: 1013.2mbar
The months with the highest atmospheric pressure are April and May (1014.2mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Gunnarskär, Sweden
- Average wind speed in September: 15.9km/h
The windiest month (with the highest average wind speed) is December (18km/h).
The calmest month (with the lowest average wind speed) is July (13.4km/h).
Average humidity in September
Gunnarskär, Sweden
- Average humidity in September: 78%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are May and June (70%).
Average rainfall in September
Gunnarskär, Sweden
- Average rainfall in September: 42mm
The wettest months (with the highest rainfall) are July and August (57mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in September
Gunnarskär, Sweden
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is August (17.8 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in September
Gunnarskär, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is January (102mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Gunnarskär, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Gunnarskär, Sweden
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 12min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is June (Average sunshine: 12h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).
Average sunshine days in September
Gunnarskär, Sweden
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is April (17.1 days).
The month with the least sunshine days is November (10.3 days).
Average UV index in September
Gunnarskär, Sweden
- Average UV index in September: 4
The months with the highest UV index are May, June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Gunnarskär, Sweden
- Average cloud cover in September: 43
The month with the most cloud cover is February (Cloud cover 66).
The month with the least cloud cover is June (Cloud cover 39).
Average visibility in September
Gunnarskär, Sweden
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January and February (8km).
