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
Weather in September
Temperature
A minor decrease in the average high-temperature is observed during September, shifting from a pleasant 21.1°C (70°F) in August to a refreshing 16.4°C (61.5°F). The average nighttime temperature in Valsta, Sweden, lowers to a frosty 9.2°C (48.6°F) throughout September.Humidity
In September, the average relative humidity is 79%.Rainfall
In Valsta, in September, it is raining for 13 days, with typically 29mm (1.14") of accumulated precipitation. In Valsta, during the entire year, the rain falls for 144.9 days and collects up to 400mm (15.75") of precipitation.Snowfall
June through September are months without snowfall in Valsta.Daylight
The average length of the day in September is 12h and 50min.On the first day of September in Valsta, sunrise is at 05:56 and sunset at 19:59. On the last day of the month, sunrise is at 07:01 and sunset at 18:33 CEST.
Sunshine
In Valsta, the average sunshine in September is 7.8h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: An average maximum UV index of 3 in September leads to these recommendations:
Undertake protective steps - Preventing sun damage is advised. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Frequently asked questions
What is the temperature in September in Valsta?
What is the average humidity in September in Valsta?
How much does it rain in Valsta in September?
When it does not snow in Valsta?
Does it snow in Valsta in September?
What is the average length of the day in September in Valsta?
When is the sunrise / sunset in September in Valsta?
How long on average sun shines in September in Valsta?
What is the UV index intensity in September in Valsta?
Average temperature in September
Valsta, Sweden
- Average high temperature in September: 16.4°C
The warmest month (with the highest average high temperature) is July (22.2°C).
The month with the lowest average high temperature is January (-0.8°C).
- Average low temperature in September: 9.2°C
The month with the highest average low temperature is July (12.6°C).
The coldest months (with the lowest average low temperature) are January and February (-4.4°C).
Average pressure in September
Valsta, Sweden
- Average pressure in September: 1013.6mbar
The month with the highest atmospheric pressure is May (1014.6mbar).
The month with the lowest atmospheric pressure is December (1008.2mbar).
Average wind speed in September
Valsta, Sweden
- Average wind speed in September: 12.2km/h
The windiest month (with the highest average wind speed) is December (13.7km/h).
The calmest month (with the lowest average wind speed) is August (11.1km/h).
Average humidity in September
Valsta, Sweden
- Average humidity in September: 79%
The months with the highest relative humidity are January, February and December (90%).
The month with the lowest relative humidity is May (69%).
Average rainfall in September
Valsta, Sweden
- Average rainfall in September: 29mm
The wettest month (with the highest rainfall) is July (55mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
Valsta, Sweden
- Average rainfall days in September: 13 days
The months with the highest number of rainy days are July and August (16.8 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in September
Valsta, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is January (121mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Valsta, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (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
Valsta, Sweden
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 24min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 0min).
Average sunshine days in September
Valsta, Sweden
- Average sunshine days in September: 13.9 days
The months with the most sunshine days are March and April (15.6 days).
The month with the least sunshine days is February (11.8 days).
Average UV index in September
Valsta, Sweden
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Valsta, Sweden
- Average cloud cover in September: 48
The month with the most cloud cover is February (Cloud cover 68).
The months with the least cloud cover are June and August (Cloud cover 42).
Average visibility in September
Valsta, Sweden
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August and September (9km).
The months with the lowest visibility are January and February (7km).
Valsta, Sweden
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