September weather forecastGrillby, Sweden
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Grillby, Sweden, with an average temperature ranging between max 16.3°C (61.3°F) and min 8.9°C (48°F).Temperature
September heralds a minor drop in average high-temperature, sliding from August's agreeable 20.8°C (69.4°F) to a comfortable 16.3°C (61.3°F). September nights experience a consistent temperature drop to a chilly 8.9°C (48°F).Humidity
The average relative humidity in September in Grillby is 79%.Rainfall
In September, in Grillby, Sweden, the rain falls for 13.4 days. Throughout September, 27mm (1.06") of precipitation is accumulated. Throughout the year, in Grillby, there are 147 rainfall days, and 396mm (15.59") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 51min.On the first day of September in Grillby, sunrise is at 05:48 and sunset at 19:53. On the last day of the month, sunrise is at 06:55 and sunset at 18:26 CEST.
Sunshine
In Grillby, the average sunshine in September is 8h.UV index
In Grillby, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily maximum UV index of 3 leads to the following instructions:
Act with care - The suggestion to avoid sunburn is emphasized. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grillby, Sweden
- Average high temperature in September: 16.3°C
The warmest month (with the highest average high temperature) is July (21.8°C).
The month with the lowest average high temperature is January (-1.1°C).
- Average low temperature in September: 8.9°C
The month with the highest average low temperature is July (12.7°C).
The coldest months (with the lowest average low temperature) are January and February (-4.8°C).
Average pressure in September
Grillby, Sweden
- Average pressure in September: 1013.2mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1007.6mbar).
Average wind speed in September
Grillby, Sweden
- Average wind speed in September: 12.3km/h
The windiest month (with the highest average wind speed) is December (15.2km/h).
The calmest months (with the lowest average wind speed) are July and August (11.2km/h).
Average humidity in September
Grillby, Sweden
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Grillby, Sweden
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is July (46mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in September
Grillby, Sweden
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is February (6.6 days).
Average snowfall in September
Grillby, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is December (110mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Grillby, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grillby, Sweden
- Average daylight in September: 12h and 54min
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: 8h and 0min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in September
Grillby, Sweden
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is September (14.3 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in September
Grillby, Sweden
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in September
Grillby, Sweden
- Average cloud cover in September: 46
The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are June, July and August (Cloud cover 42).
Average visibility in September
Grillby, Sweden
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February, March, November and December (8km).
