September weather forecastHelsingør, Denmark

September

Weather in September

Come September, Helsingør starts the transition from summer to fall with temperatures decreasing to between 12.5°C (54.5°F) and 17°C (62.6°F). This month, Helsingør receives a rainfall of 34mm (1.34"), indicating a slow decline from the August peak. The sea temperature falls to 16.4°C (61.5°F), marking the start of a cooldown in waters. Speed of wind inches higher to an average 16.7km/h (10.4mph), revealing a sign of change in season. The UV index remains at 4, suggesting the ongoing presence of potent daylight.

Temperature

With the commencement of September, Helsingør records a moderate temperature decline, with the average high easing from August's pleasant 20.3°C (68.5°F) to an enjoyable 17°C (62.6°F). Helsingør upholds a consistent average temperature of 12.5°C (54.5°F) throughout the nights of September.

Humidity

In Helsingør, Denmark, the average relative humidity in September is 78%.

Rainfall

In September, in Helsingør, the rain falls for 14.4 days. Throughout September, 34mm (1.34") of precipitation is accumulated. Throughout the year, in Helsingør, Denmark, there are 167.1 rainfall days, and 386mm (15.2") of precipitation is accumulated.

Snowfall

In Helsingør, Denmark, snow does not fall in June through October.

Sea temperature

In September, the average sea temperature in Helsingør is 16.4°C (61.5°F).
Note: The majority of individuals find it unpleasurable to swim in 16.4°C (61.5°F). It becomes progressively harder to manage one's breathing as the water temperature falls below 21°C (69.8°F).

Daylight

The average length of the day in September is 12h and 45min.
On the first day of September, sunrise is at 06:15 and sunset at 20:03. On the last day of the month, sunrise is at 07:11 and sunset at 18:47 CEST.

Sunshine

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

UV index

In Helsingør, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: An average maximum UV index of 4 in September leads to these recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.

Updated: Jan 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The average high-temperature, in September, in Helsingør, is 17°C (62.6°F), while the average low-temperature is 12.5°C (54.5°F).

In September, the average relative humidity in Helsingør is 78%.

In Helsingør, Denmark, in September, it is raining for 14.4 days, with typically 34mm (1.34") of accumulated precipitation.

In Helsingør, Denmark, snow does not fall in June through October.

In September, the average sea temperature in Helsingør, Denmark, is 16.4°C (61.5°F). For most, swimming in 16.4°C (61.5°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

In Helsingør, the average day length in September is 12h and 45min.

In September, on the first day of the month, sunrise is at 06:15 and sunset at 20:03. On the last day of the month, in Helsingør, Denmark, sunrise is at 07:11 and sunset at 18:47 CEST.

The average sunshine duration in September in Helsingør is 7.4h.

In Helsingør, Denmark, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

20.3°C

17°C

11.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

15.8km/h

17.4km/h

19.4km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

0.2

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

9.8

12.2

11.1

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Helsingør, Denmark

Average high temperature in September: 17°C

The warmest month (with the highest average high temperature) is July (20.7°C).
The month with the lowest average high temperature is January (2.4°C).

Average low temperature in September: 12.5°C

The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is February (-0.4°C).

Average pressure in September
Helsingør, Denmark

Average pressure in September: 1015.1mbar

The month with the highest atmospheric pressure is April (1015.5mbar).
The month with the lowest atmospheric pressure is December (1010.7mbar).

Average wind speed in September
Helsingør, Denmark

Average wind speed in September: 16.7km/h

The windiest month (with the highest average wind speed) is December (20.1km/h).
The calmest month (with the lowest average wind speed) is July (14.5km/h).

Average humidity in September
Helsingør, Denmark

Average humidity in September: 78%

The months with the highest relative humidity are January and December (87%).
The months with the lowest relative humidity are April and May (73%).

Average rainfall in September
Helsingør, Denmark

Average rainfall in September: 34mm

The wettest month (with the highest rainfall) is August (52mm).
The driest month (with the least rainfall) is April (16mm).

Average rainfall days in September
Helsingør, Denmark

Average rainfall days in September: 14.4 days

The month with the highest number of rainy days is August (18.3 days).
The month with the least rainy days is February (8.7 days).

Average snowfall in September
Helsingør, Denmark

Average snowfall in September: 0mm

The month with the highest snowfall is February (49mm).
The months with the least snowfall are June, July, August, September and October (0mm).

Average snowfall days in September
Helsingør, 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 June, July, August and September (0 days).

Average sea temperature in September
Helsingør, Denmark

Average sea temperature in September: 16.4°C

The best month for swimming (with the highest average sea temperature) is August (18.6°C).
The coldest month (with the lowest average sea temperature) is February (1.8°C).

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

Average daylight in September: 12h and 42min

The month with the longest days is June (Average daylight: 17h and 30min).
The month with the shortest days is December (Average daylight: 7h and 6min).

Average sunshine in September: 7h and 24min

The month with the most sunshine is June (Average sunshine: 9h and 18min).
The month with the least sunshine is December (Average sunshine: 2h and 54min).

Average sunshine days in September
Helsingør, Denmark

Average sunshine days in September: 12.2 days

The month with the most sunshine days is April (14.9 days).
The month with the least sunshine days is December (8.6 days).

Average UV index in September
Helsingør, Denmark

Average UV index in September: 4

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

Average cloud cover in September
Helsingør, Denmark

Average cloud cover in September: 49

The month with the most cloud cover is December (Cloud cover 71).
The months with the least cloud cover are June and August (Cloud cover 41).

Average visibility in September
Helsingør, Denmark

Average visibility in September: 10km

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