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
The commencement of September in Södertälje, Sweden, indicates a gentle shift in the average high-temperature, receding from August's agreeable 20.7°C (69.3°F) to a refreshing 16°C (60.8°F). Nighttime temperatures in Södertälje consistently average a chilly 9.6°C (49.3°F) during September.Humidity
In Södertälje, the average relative humidity in September is 80%.Rainfall
In Södertälje, during September, the rain falls for 11.5 days and regularly aggregates up to 24mm (0.94") of precipitation. In Södertälje, during the entire year, the rain falls for 131.4 days and collects up to 350mm (13.78") of precipitation.Snowfall
June through September are months without snowfall in Södertälje.Daylight
The average length of the day in September is 12h and 50min.On the first day of September, sunrise is at 05:47 and sunset at 19:50. On the last day of the month, sunrise is at 06:53 and sunset at 18:25 CEST.
Sunshine
In Södertälje, the average sunshine in September is 8.2h.UV index
In Södertälje, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the average maximum UV index of 3 translates into the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Frequently asked questions
What is the average September temperature in Södertälje?
What is the average humidity in September in Södertälje?
How much does it rain in Södertälje in September?
When it does not snow in Södertälje?
Does it snow in Södertälje in September?
What is the average length of the day in September in Södertälje?
When are sunrise and sunset in September in Södertälje?
How long on average sun shines in September in Södertälje?
What is the UV index reading in September in Södertälje?
Average temperature in September
Södertälje, Sweden
- Average high temperature in September: 16°C
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (-0.5°C).
- Average low temperature in September: 9.6°C
The month with the highest average low temperature is July (13.2°C).
The coldest month (with the lowest average low temperature) is February (-3.6°C).
Average pressure in September
Södertälje, Sweden
- Average pressure in September: 1013.5mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Södertälje, Sweden
- Average wind speed in September: 14km/h
The windiest month (with the highest average wind speed) is December (18km/h).
The calmest months (with the lowest average wind speed) are July and August (12.5km/h).
Average humidity in September
Södertälje, Sweden
- Average humidity in September: 80%
The months with the highest relative humidity are January, February, November and December (88%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Södertälje, Sweden
- Average rainfall in September: 24mm
The wettest month (with the highest rainfall) is July (44mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in September
Södertälje, Sweden
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Södertälje, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (87mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Södertälje, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Södertälje, 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: 8h and 1min
The month with the most sunshine is June (Average sunshine: 12h and 18min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in September
Södertälje, Sweden
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is May (16.9 days).
The months with the least sunshine days are June and July (13.6 days).
Average UV index in September
Södertälje, 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
Södertälje, Sweden
- Average cloud cover in September: 42
The month with the most cloud cover is February (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Södertälje, Sweden
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).
Södertälje, Sweden
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