September weather forecastGrönadal, Sweden
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Grönadal, Sweden, with an average temperature fluctuating between 16.3°C (61.3°F) and 12.6°C (54.7°F).Temperature
The average high-temperature shows a slight dip in September, from August's 19.8°C (67.6°F) to a still comfortable 16.3°C (61.3°F). Grönadal's nighttime temperatures in September reveal a minimal variation from the daytime highs, averaging at a cool 12.6°C (54.7°F).Humidity
The average relative humidity in September is 78%.Rainfall
In Grönadal, in September, during 12.4 rainfall days, 32mm (1.26") of precipitation is typically accumulated. In Grönadal, during the entire year, the rain falls for 150.2 days and collects up to 411mm (16.18") of precipitation.Snowfall
In Grönadal, Sweden, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 45min.On the first day of the month, sunrise is at 06:03 and sunset at 19:52. On the last day of September, in Grönadal, sunrise is at 07:00 and sunset at 18:35 CEST.
Sunshine
The average sunshine in September in Grönadal is 8.6h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Heed the precautions - Suggestions to avoid sunburn are made. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grönadal, Sweden
- Average high temperature in September: 16.3°C
The warmest month (with the highest average high temperature) is August (19.8°C).
The month with the lowest average high temperature is January (2°C).
- Average low temperature in September: 12.6°C
The month with the highest average low temperature is August (15.5°C).
The coldest month (with the lowest average low temperature) is February (-0.4°C).
Average pressure in September
Grönadal, Sweden
- Average pressure in September: 1015.2mbar
The months with the highest atmospheric pressure are April and May (1015.5mbar).
The month with the lowest atmospheric pressure is December (1010.8mbar).
Average wind speed in September
Grönadal, Sweden
- Average wind speed in September: 20.9km/h
The windiest month (with the highest average wind speed) is December (24.5km/h).
The calmest month (with the lowest average wind speed) is June (17.5km/h).
Average humidity in September
Grönadal, Sweden
- Average humidity in September: 78%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April and May (75%).
Average rainfall in September
Grönadal, Sweden
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is July (47mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in September
Grönadal, Sweden
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in September
Grönadal, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is January (56mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Grönadal, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grönadal, Sweden
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 17h and 36min).
The month with the shortest days is December (Average daylight: 7h and 0min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are January and December (Average sunshine: 3h and 6min).
Average sunshine days in September
Grönadal, Sweden
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is April (18 days).
The months with the least sunshine days are November and December (9.3 days).
Average UV index in September
Grönadal, Sweden
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Grönadal, Sweden
- Average cloud cover in September: 40
The month with the most cloud cover is December (Cloud cover 69).
The months with the least cloud cover are June and August (Cloud cover 33).
Average visibility in September
Grönadal, Sweden
- 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).
