September weather forecastKarlbo, Sweden

September

Weather in September

The first month of the autumn, September, is still a mild month in Karlbo, Sweden, with temperature in the range of an average high of 15.7°C (60.3°F) and an average low of 7.9°C (46.2°F).

Temperature

With the commencement of September, Karlbo records a moderate temperature decline, with the average high easing from August's agreeable 20.5°C (68.9°F) to a moderate 15.7°C (60.3°F). Karlbo, in September, experiences an average temperature of 7.9°C (46.2°F) at night.

Humidity

In Karlbo, the average relative humidity in September is 79%.

Rainfall

In Karlbo, in September, it is raining for 12.9 days, with typically 30mm (1.18") of accumulated precipitation. In Karlbo, during the entire year, the rain falls for 141.3 days and collects up to 397mm (15.63") of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Karlbo, the average length of the day in September is 12h and 52min.
On the first day of September in Karlbo, sunrise is at 05:51 and sunset at 19:58. On the last day of the month, sunrise is at 06:59 and sunset at 18:30 CEST.

Sunshine

The average sunshine in September in Karlbo is 7.7h.

UV index

In September, the average daily maximum UV index in Karlbo, Sweden, is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: A typical high UV index of 3 in September suggests the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.

Frequently asked questions

The high-temperature in Karlbo, Sweden, during September is 15.7°C (60.3°F) and the low-temperature is 7.9°C (46.2°F).

In Karlbo, Sweden, the average relative humidity in September is 79%.

In Karlbo, Sweden, during September, the rain falls for 12.9 days and regularly aggregates up to 30mm (1.18") of precipitation.

June through September are months without snowfall.

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

In September, the average day length in Karlbo is 12h and 52min.

In September, on the first day of the month, sunrise is at 05:51 and sunset at 19:58. On the last day of the month, in Karlbo, Sweden, sunrise is at 06:59 and sunset at 18:30 CEST.

In September, the average sunshine duration is 7.7h.

In Karlbo, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Karlbo, Sweden

  • Average high temperature in September: 15.7°C

The warmest month (with the highest average high temperature) is July (21.9°C).
The month with the lowest average high temperature is January (-1.9°C).

  • Average low temperature in September: 7.9°C

The month with the highest average low temperature is July (12°C).
The coldest month (with the lowest average low temperature) is February (-5.8°C).

Average pressure in September
Karlbo, Sweden

  • Average pressure in September: 1013mbar

The month with the highest atmospheric pressure is May (1014.5mbar).
The month with the lowest atmospheric pressure is December (1007.3mbar).

Average wind speed in September
Karlbo, Sweden

  • Average wind speed in September: 10.4km/h

The windiest month (with the highest average wind speed) is December (11.6km/h).
The calmest month (with the lowest average wind speed) is August (9.5km/h).

Average humidity in September
Karlbo, Sweden

  • Average humidity in September: 79%

The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (67%).

Average rainfall in September
Karlbo, Sweden

  • Average rainfall in September: 30mm

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
Karlbo, Sweden

  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is August (18.1 days).
The month with the least rainy days is January (5.6 days).

Average snowfall in September
Karlbo, Sweden

  • Average snowfall in September: 0mm

The month with the highest snowfall is January (164mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September
Karlbo, Sweden

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

  • Average daylight in September: 12h and 54min

The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).

  • Average sunshine in September: 7h and 42min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 2h and 6min).

Average sunshine days in September
Karlbo, Sweden

  • Average sunshine days in September: 14.2 days

The month with the most sunshine days is October (16 days).
The month with the least sunshine days is July (9.8 days).

Average UV index in September
Karlbo, 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
Karlbo, Sweden

  • Average cloud cover in September: 49

The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is July (Cloud cover 44).

Average visibility in September
Karlbo, Sweden

  • Average visibility in September: 8km

The months with the highest visibility are April, May, June, July and August (9km).
The months with the lowest visibility are January and February (6km).