September weather forecast
Slagelse, Denmark

englishespañol中文
Share

Weather in September

The transition between summer and autumn introduces September in Slagelse. Daylight hours begin to decrease, culminating in a softer light and shorter days. The decline in temperature from August's high of 20.8°C (69.4°F) to a September high of 16.9°C (62.4°F) clearly outlines the transition. The weather of the coming month, October, continues this temperate and cooling trend and it commences with the autumn foliage season.

Temperature

September in Slagelse signals a slight drop in average high-temperature, sliding from August's pleasant 20.8°C (69.4°F) to an enjoyable 16.9°C (62.4°F). Slagelse throughout September, experiences an average nighttime temperature of 11.7°C (53.1°F).

Humidity

In September, the average relative humidity is 82%.

Rainfall

In Slagelse, during September, the rain falls for 14.4 days and regularly aggregates up to 30mm (1.18") of precipitation. Throughout the year, in Slagelse, there are 153.4 rainfall days, and 293mm (11.54") of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Slagelse.

Daylight

The average length of the day in September is 12h and 44min.
On the first day of the month, sunrise is at 06:21 and sunset at 20:07. On the last day of September, in Slagelse, sunrise is at 07:16 and sunset at 18:52 CEST.

Sunshine

In Slagelse, the average sunshine in September is 7.4h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: In September, a regular UV index of 4 translates into these guidelines:
Undertake precautions - It is suggested to shield oneself from sunburn. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.

Frequently asked questions

What are September temperatures in Slagelse?

During September, Slagelse experiences an average high-temperature of 16.9°C (62.4°F) and a low-temperature of 11.7°C (53.1°F).

What is the average humidity in September in Slagelse?

In Slagelse, the average relative humidity in September is 82%.

How many days does it rain in September in Slagelse?

In Slagelse, during September, the rain falls for 14.4 days and regularly aggregates up to 30mm (1.18") of precipitation.

When it does not snow in Slagelse?

In Slagelse, Denmark, snow does not fall in May through October.

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

In September, the average day length is 12h and 44min.

When are sunrise and sunset in September in Slagelse?

In September, on the first day of the month, sunrise is at 06:21 and sunset at 20:07. On the last day of the month, in Slagelse, Denmark, sunrise is at 07:16 and sunset at 18:52 CEST.

How long on average sun shines in September in Slagelse?

The average sunshine duration in September is 7.4h.

What is the UV index intensity in September in Slagelse?

In September, the average daily maximum UV index in Slagelse, Denmark, is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Slagelse, Denmark

Average temperature in September - Slagelse, Denmark
  • Average high temperature in September: 16.9°C

The warmest month (with the highest average high temperature) is July (20.9°C).
The month with the lowest average high temperature is January (2.8°C).

  • Average low temperature in September: 11.7°C

The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is February (-0.7°C).

Average pressure in September
Slagelse, Denmark

Average pressure in September - Slagelse, Denmark
  • Average pressure in September: 1015.3mbar

The month with the highest atmospheric pressure is April (1015.6mbar).
The month with the lowest atmospheric pressure is November (1011.2mbar).

Average wind speed in September
Slagelse, Denmark

Average wind speed in September - Slagelse, Denmark
  • Average wind speed in September: 14.2km/h

The windiest month (with the highest average wind speed) is December (17.3km/h).
The calmest month (with the lowest average wind speed) is July (13km/h).

Average humidity in September
Slagelse, Denmark

Average humidity in September - Slagelse, Denmark
  • Average humidity in September: 82%

The months with the highest relative humidity are January, November and December (89%).
The months with the lowest relative humidity are May and June (77%).

Average rainfall in September
Slagelse, Denmark

Average rainfall in September - Slagelse, Denmark
  • Average rainfall in September: 30mm

The wettest month (with the highest rainfall) is August (37mm).
The driest month (with the least rainfall) is April (10mm).

Average rainfall days in September
Slagelse, Denmark

Average rainfall days in September - Slagelse, Denmark
  • Average rainfall days in September: 14.4 days

The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is February (8.7 days).

Average snowfall in September
Slagelse, Denmark

Average snowfall in September - Slagelse, Denmark
  • Average snowfall in September: 0mm

The month with the highest snowfall is December (40mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in September
Slagelse, Denmark

Average snowfall days in September - Slagelse, Denmark
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (8.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Slagelse, Denmark

Average daylight in September / Average sunshine in September - Slagelse, Denmark
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 17h and 24min).
The month with the shortest days is December (Average daylight: 7h and 12min).

  • Average sunshine in September: 7h and 2min

The month with the most sunshine is August (Average sunshine: 9h and 12min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 0min).

Average sunshine days in September
Slagelse, Denmark

Average sunshine days in September - Slagelse, Denmark
  • Average sunshine days in September: 11.4 days

The month with the most sunshine days is April (17.1 days).
The month with the least sunshine days is December (9.5 days).

Average UV index in September
Slagelse, Denmark

Average UV index in September - Slagelse, Denmark
  • Average UV index in September: 4

The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in September
Slagelse, Denmark

Average cloud cover in September - Slagelse, Denmark
  • Average cloud cover in September: 49

The month with the most cloud cover is December (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 41).

Average visibility in September
Slagelse, Denmark

Average visibility in September - Slagelse, Denmark
  • Average visibility in September: 9km

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

Slagelse, Denmark

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location