September weather forecast and climate
Hirtshals, Denmark

Weather in September

The first month of the autumn, September, is still a comfortable month in Hirtshals, Denmark, with temperature in the range of an average high of 16.2°C (61.2°F) and an average low of 12°C (53.6°F).

Temperature

In Hirtshals, the average high-temperature in September slightly decreases, from a comfortable 19.2°C (66.6°F) in August, to a still enjoyable 16.2°C (61.2°F). In September, the average low-temperature is 12°C (53.6°F).

Humidity

In Hirtshals, the average relative humidity is 78%.

Rainfall

In September, the rain falls for 13.8 days. Throughout September, 29mm (1.14") of precipitation is accumulated. Throughout the year, there are 155.3 rainfall days, and 401mm (15.79") of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Sea temperature

In September, the average sea temperature is 15.8°C (60.4°F).
Note: Swimming in 15.8°C (60.4°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

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

Sunshine

The average sunshine in Hirtshals is 7.4h.

UV index

In Hirtshals, Denmark, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the average humidity in September in Hirtshals?

The average relative humidity in September in Hirtshals is 78%.

How much does it rain in Hirtshals in September?

In September, in Hirtshals, the rain falls for 13.8 days. Throughout September, 29mm (1.14") of precipitation is accumulated.

When it does not snow in Hirtshals?

May through September are months without snowfall in Hirtshals, Denmark.

Does it snow in Hirtshals in September?

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

What is the sea water temperature in September in Hirtshals?

In Hirtshals, in September, the average water temperature is 15.8°C (60.4°F). Swimming in 15.8°C (60.4°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Hirtshals have in September?

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

How many hours of sunshine does Hirtshals have in September?

In September, the average sunshine in Hirtshals, Denmark, is 7.4h.

What is the UV index reading in September in Hirtshals?

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in September
Hirtshals, Denmark

Average temperature in September - Hirtshals, Denmark
  • Average high temperature in September: 16.2°C

The warmest month (with the highest average high temperature) is July (19.3°C).
The month with the lowest average high temperature is February (2.9°C).

  • Average low temperature in September: 12°C

The month with the highest average low temperature is August (14.6°C).
The coldest month (with the lowest average low temperature) is February (0.3°C).

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Average pressure in September
Hirtshals, Denmark

Average pressure in September - Hirtshals, Denmark
  • Average pressure in September: 1013.6mbar

The month with the highest atmospheric pressure is April (1014.8mbar).
The month with the lowest atmospheric pressure is December (1008.6mbar).

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Average wind speed in September
Hirtshals, Denmark

Average wind speed in September - Hirtshals, Denmark
  • Average wind speed in September: 19.6km/h

The windiest month (with the highest average wind speed) is December (22.6km/h).
The calmest month (with the lowest average wind speed) is June (17km/h).

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Average humidity in September
Hirtshals, Denmark

Average humidity in September - Hirtshals, Denmark
  • Average humidity in September: 78%

Months with the highest relative humidity are January, February and November (84%).
Months with the lowest relative humidity are April and May (73%).

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Average rainfall in September
Hirtshals, Denmark

Average rainfall in September - Hirtshals, Denmark
  • Average rainfall in September: 29mm

The wettest month (with the highest rainfall) is October (47mm).
The driest month (with the least rainfall) is April (17mm).

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Average rainfall days in September
Hirtshals, Denmark

Average rainfall days in September - Hirtshals, Denmark
  • Average rainfall days in September: 13.8 days

The month with the highest number of rainy days is October (15.9 days).
The month with the least rainy days is February (9.3 days).

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Average snowfall in September
Hirtshals, Denmark

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

The month with the highest snowfall is January (48mm).
Months with the least snowfall are May, June, July, August and September (0mm).

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Average snowfall days in September
Hirtshals, Denmark

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

The month with the highest number of snowfall days is January (9.3 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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Average sea temperature in September
Hirtshals, Denmark

Average sea temperature in September - Hirtshals, Denmark
  • Average sea temperature in September: 15.8°C

The best month for swimming (with the highest average sea temperature) is August (17.8°C).
The coldest month (with the lowest average sea temperature) is March (3.8°C).

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

Average daylight in September / Average sunshine in September - Hirtshals, Denmark
  • Average daylight in September: 12.8h

The month with the longest days is June (Average daylight: 17.9h).
The month with the shortest days is December (Average daylight: 6.7h).

  • Average sunshine in September: 7.4h

The month with the most sunshine is June (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 3h).

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Average sunshine days in September
Hirtshals, Denmark

Average sunshine days in September - Hirtshals, Denmark
  • Average sunshine days in September: 13.5 days

The month with the most sunshine days is April (17.3 days).
The month with the least sunshine days is December (9.6 days).

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Average UV index in September
Hirtshals, Denmark

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

The month with the highest UV index is July (UV index 5).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in September
Hirtshals, Denmark

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

The month with the most cloud cover is November (Cloud cover 69).
The month with the least cloud cover is July (Cloud cover 39).

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Average visibility in September
Hirtshals, Denmark

Average visibility in September - Hirtshals, Denmark
  • Average visibility in September: 10km

Months with the highest visibility are April, May, June, July, August and September (10km).
Months with the lowest visibility are January, February, March, October, November and December (9km).

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