September weather forecast and climate
Sunnerkullen, Sweden

Weather in September

September, the first month of the autumn, in Sunnerkullen, is also a moderate month, with average temperature ranging between max 15.8°C (60.4°F) and min 9.5°C (49.1°F).

Temperature

In September, the average high-temperature slightly decreases, from an agreeable 20.1°C (68.2°F) in August, to a mild 15.8°C (60.4°F). The average low-temperature, in Sunnerkullen, is 9.5°C (49.1°F).

Humidity

In Sunnerkullen, Sweden, the average relative humidity is 80%.

Rainfall

In September, the rain falls for 11.6 days. Throughout September, 28mm (1.1") of precipitation is accumulated. In Sunnerkullen, during the entire year, the rain falls for 142.6 days and collects up to 399mm (15.71") of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Sunnerkullen, Sweden, the average length of the day in September is 12.8h.

Sunshine

In Sunnerkullen, the average sunshine in September is 7.5h.

UV index

The average daily maximum UV index in Sunnerkullen is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 3 in September transform into the following instructions:
Take precautions - Protection against sunburn is recommended. 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 temperature in September in Sunnerkullen?

In September, the average high-temperature is 15.8°C (60.4°F), and the average low-temperature is 9.5°C (49.1°F).

What is the average humidity in September in Sunnerkullen?

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

How many days does it rain in September in Sunnerkullen?

In Sunnerkullen, during September, the rain falls for 11.6 days and regularly aggregates up to 28mm (1.1") of precipitation.

Does it snow in Sunnerkullen in September?

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

When it does not snow in Sunnerkullen?

In Sunnerkullen, Sweden, snow does not fall in June through September.

How many hours of daylight does Sunnerkullen have in September?

In September, the average length of the day in Sunnerkullen is 12.8h.

How long on average sun shines in September in Sunnerkullen?

In September, the average sunshine is 7.5h.

How high is the UV index in September in Sunnerkullen?

In Sunnerkullen, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe exposure to the Sun's UV rays.

Average temperature in September
Sunnerkullen, Sweden

Average temperature in September - Sunnerkullen, Sweden
  • Average high temperature in September: 15.8°C

The warmest month (with the highest average high temperature) is July (21.1°C).
The month with the lowest average high temperature is January (0°C).

  • Average low temperature in September: 9.5°C

The month with the highest average low temperature is July (12.1°C).
The coldest month (with the lowest average low temperature) is February (-3.3°C).

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Average pressure in September
Sunnerkullen, Sweden

Average pressure in September - Sunnerkullen, Sweden
  • Average pressure in September: 1013.7mbar

Months with the highest atmospheric pressure are April and May (1014.5mbar).
The month with the lowest atmospheric pressure is December (1008.6mbar).

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Average wind speed in September
Sunnerkullen, Sweden

Average wind speed in September - Sunnerkullen, Sweden
  • Average wind speed in September: 13.7km/h

The windiest month (with the highest average wind speed) is December (16.2km/h).
The calmest month (with the lowest average wind speed) is July (12km/h).

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Average humidity in September
Sunnerkullen, Sweden

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

The month with the highest relative humidity is January (89%).
Months with the lowest relative humidity are April and May (70%).

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Average rainfall in September
Sunnerkullen, Sweden

Average rainfall in September - Sunnerkullen, Sweden
  • Average rainfall in September: 28mm

The wettest month (with the highest rainfall) is July (51mm).
The driest month (with the least rainfall) is April (14mm).

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Average rainfall days in September
Sunnerkullen, Sweden

Average rainfall days in September - Sunnerkullen, Sweden
  • Average rainfall days in September: 11.6 days

The month with the highest number of rainy days is August (17.1 days).
The month with the least rainy days is February (5.7 days).

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Average snowfall in September
Sunnerkullen, Sweden

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

The month with the highest snowfall is February (91mm).
Months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in September
Sunnerkullen, Sweden

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

The month with the highest number of snowfall days is February (12.4 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
Sunnerkullen, Sweden

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

The month with the longest days is June (Average daylight: 18.2h).
The month with the shortest days is December (Average daylight: 6.5h).

  • Average sunshine in September: 7.5h

The month with the most sunshine is June (Average sunshine: 11.3h).
The month with the least sunshine is December (Average sunshine: 3.1h).

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Average sunshine days in September
Sunnerkullen, Sweden

Average sunshine days in September - Sunnerkullen, Sweden
  • Average sunshine days in September: 15 days

The month with the most sunshine days is April (15.8 days).
The month with the least sunshine days is November (11.5 days).

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Average UV index in September
Sunnerkullen, Sweden

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

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in September
Sunnerkullen, Sweden

Average cloud cover in September - Sunnerkullen, Sweden
  • Average cloud cover in September: 48

The month with the most cloud cover is December (Cloud cover 69).
The month with the least cloud cover is June (Cloud cover 42).

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Average visibility in September
Sunnerkullen, Sweden

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

Months with the highest visibility are April, May, June, July, August, September and October (9km).
Months with the lowest visibility are January, February, March, November and December (8km).

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