September weather forecast
Trollebo, Sweden

Weather in September

September, the first month of the autumn, in Trollebo, is still a mild month, with average temperature ranging between max 15.5°C (59.9°F) and min 9.8°C (49.6°F).

Temperature

In Trollebo, the average high-temperature in September marginally drops, from a comfortable 19.4°C (66.9°F) in August, to a moderate 15.5°C (59.9°F). The average low-temperature,, is 9.8°C (49.6°F).

Humidity

In September, the average relative humidity in Trollebo is 80%.

Rainfall

In Trollebo, Sweden, in September, during 9.7 rainfall days, 12mm (0.47") of precipitation is typically accumulated. Throughout the year, there are 118 rainfall days, and 198mm (7.8") of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In Trollebo, the average length of the day is 12.8h.

Sunshine

In September, the average sunshine in Trollebo is 7.8h.

UV index

In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in September in Trollebo?

In September, the average relative humidity in Trollebo is 80%.

How many days does it rain in September in Trollebo?

In Trollebo, during September, the rain falls for 9.7 days and regularly aggregates up to 12mm (0.47") of precipitation.

When it does not snow in Trollebo?

In Trollebo snow does not fall in June through September.

Does it snow in Trollebo in September?

In Trollebo, Sweden, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Trollebo?

The average length of the day in September in Trollebo, Sweden, is 12.8h.

How long on average sun shines in September in Trollebo?

The average sunshine in September is 7.8h.

What is the UV index reading in September in Trollebo?

In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in September
Trollebo, Sweden

Average temperature in September - Trollebo, Sweden
  • Average high temperature in September: 15.5°C

The warmest month (with the highest average high temperature) is July (20.2°C).
The month with the lowest average high temperature is January (0.2°C).

  • Average low temperature in September: 9.8°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 (-2.8°C).

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Average pressure in September
Trollebo, Sweden

Average pressure in September - Trollebo, Sweden
  • Average pressure in September: 1013.8mbar

Months with the highest atmospheric pressure are April and May (1014.6mbar).
The month with the lowest atmospheric pressure is December (1008.7mbar).

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Average wind speed in September
Trollebo, Sweden

Average wind speed in September - Trollebo, Sweden
  • Average wind speed in September: 15.3km/h

The windiest month (with the highest average wind speed) is December (17.9km/h).
The calmest month (with the lowest average wind speed) is June (13km/h).

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Average humidity in September
Trollebo, Sweden

Average humidity in September - Trollebo, Sweden
  • Average humidity in September: 80%

Months with the highest relative humidity are January, February, November and December (88%).
Months with the lowest relative humidity are April and May (72%).

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Average rainfall in September
Trollebo, Sweden

Average rainfall in September - Trollebo, Sweden
  • Average rainfall in September: 12mm

The wettest month (with the highest rainfall) is July (28mm).
The driest month (with the least rainfall) is April (6mm).

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Average rainfall days in September
Trollebo, Sweden

Average rainfall days in September - Trollebo, Sweden
  • Average rainfall days in September: 9.7 days

The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (5.5 days).

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Average snowfall in September
Trollebo, Sweden

Average snowfall in September - Trollebo, Sweden
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (41mm).
Months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in September
Trollebo, Sweden

Average snowfall days in September - Trollebo, Sweden
  • Average snowfall days in September: 0 days

Months with the highest number of snowfall days are January and February (10.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Trollebo, Sweden

Average daylight in September / Average sunshine in September - Trollebo, Sweden
  • Average daylight in September: 12.8h

The month with the longest days is June (Average daylight: 18.1h).
The month with the shortest days is December (Average daylight: 6.5h).

  • Average sunshine in September: 7.8h

The month with the most sunshine is June (Average sunshine: 11.6h).
Months with the least sunshine are February and December (Average sunshine: 3.3).

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Average sunshine days in September
Trollebo, Sweden

Average sunshine days in September - Trollebo, Sweden
  • Average sunshine days in September: 16.6 days

The month with the most sunshine days is April (18.4 days).
The month with the least sunshine days is July (12.5 days).

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Average UV index in September
Trollebo, Sweden

Average UV index in September - Trollebo, Sweden
  • Average UV index in September: 3

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).

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Average cloud cover in September
Trollebo, Sweden

Average cloud cover in September - Trollebo, Sweden
  • Average cloud cover in September: 46

The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is June (Cloud cover 40).

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Average visibility in September
Trollebo, Sweden

Average visibility in September - Trollebo, Sweden
  • Average visibility in September: 9km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).

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