September weather forecast and climate
Svallby, Sweden

Weather in September

September, the first month of the autumn, in Svallby, is also an enjoyable month, with average temperature varying between 8.9°C (48°F) and 16.3°C (61.3°F).

Temperature

In Svallby, Sweden, the average high-temperature in September slightly decreases, from a pleasant 20.8°C (69.4°F) in August, to a comfortable 16.3°C (61.3°F). In Svallby, the average low-temperature is 8.9°C (48°F).

Humidity

The average relative humidity in Svallby is 79%.

Rainfall

In Svallby, during 13.4 rainfall days, 27mm (1.06") of precipitation is typically accumulated. Throughout the year, there are 147 rainfall days, and 396mm (15.59") of precipitation is accumulated.

Snowfall

In Svallby snow does not fall in June through September.

Daylight

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

Sunshine

The average sunshine in Svallby, Sweden, is 8h.

UV index

In Svallby, Sweden, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 3 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Svallby?

In Svallby, in September, the average high-temperature is 16.3°C (61.3°F), and the average low-temperature is 8.9°C (48°F).

What is the average humidity in September in Svallby?

The average relative humidity in September in Svallby, Sweden, is 79%.

How much does it rain in Svallby in September?

In Svallby, during September, the rain falls for 13.4 days and regularly aggregates up to 27mm (1.06") of precipitation.

Does it snow in Svallby in September?

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

When it does not snow in Svallby?

In Svallby snow does not fall in June through September.

How many hours of daylight does Svallby have in September?

The average length of the day in September in Svallby is 12.8h.

How many hours of sunshine does Svallby have in September?

In September, the average sunshine is 8h.

What is the UV index intensity in September in Svallby?

In September, the average daily maximum UV index in Svallby, Sweden, is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in September
Svallby, Sweden

Average temperature in September - Svallby, 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).

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Average pressure in September
Svallby, Sweden

Average pressure in September - Svallby, 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).

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Average wind speed in September
Svallby, Sweden

Average wind speed in September - Svallby, 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).

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Average humidity in September
Svallby, Sweden

Average humidity in September - Svallby, Sweden
  • Average humidity in September: 79%

Months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (70%).

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Average rainfall in September
Svallby, Sweden

Average rainfall in September - Svallby, 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).

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Average rainfall days in September
Svallby, Sweden

Average rainfall days in September - Svallby, 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).

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Average snowfall in September
Svallby, Sweden

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

The month with the highest snowfall is December (110mm).
Months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in September
Svallby, Sweden

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

The month with the highest number of snowfall days is January (14.8 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
Svallby, Sweden

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

The month with the longest days is June (Average daylight: 18.6h).
The month with the shortest days is December (Average daylight: 6.2h).

  • Average sunshine in September: 8h

The month with the most sunshine is June (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 2.5h).

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Average sunshine days in September
Svallby, Sweden

Average sunshine days in September - Svallby, 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).

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Average UV index in September
Svallby, Sweden

Average UV index in September - Svallby, 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 February (UV index 1).

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Average cloud cover in September
Svallby, Sweden

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

The month with the most cloud cover is February (Cloud cover 67).
Months with the least cloud cover are June, July and August (Cloud cover 42).

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Average visibility in September
Svallby, Sweden

Average visibility in September - Svallby, 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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