September weather forecastHals, Denmark

September

Weather in September

The arrival of September ushers in the autumn season in Hals with a marked drop in temperatures. Most notably, the sea temperature starts to take a dive, dropping down to an average of 16.3°C (61.3°F). The trees begin their transition into a spectacular display of yellow, orange, and crimson, creating a picturesque setting in the landscapes. With fewer hours of daylight, the city embraces a serene charm, quite different from the high summer energy. Despite the cooler evenings and occasional rainy days, the beauty of autumn takes center stage.

Temperature

September marks a gentle change in average high-temperature in Hals, declining from August's 19.9°C (67.8°F) to a still refreshing 16.7°C (62.1°F). The average temperature in Hals drops to a fresh 11.3°C (52.3°F) during the night in the month of September.

Humidity

The average relative humidity in September is 79%.

Rainfall

In Hals, in September, during 15.9 rainfall days, 36mm (1.42") of precipitation is typically accumulated. Throughout the year, in Hals, there are 175.1 rainfall days, and 481mm (18.94") of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Sea temperature

In Hals, the average seawater temperature in September is 16.3°C (61.3°F).
Note: For swimming, a surface water temperature of 16.3°C (61.3°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

Daylight

In September, the average length of the day is 12h and 46min.
On the first day of September, sunrise is at 06:22 and sunset at 20:15. On the last day of the month, sunrise is at 07:21 and sunset at 18:55 CEST.

Sunshine

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

UV index

In Hals, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 4 during September translates into the following recommendations:
Exercise prevention - Warding off sunburn is urged. To protect against the Sun's most potent rays, avoid direct exposure around midday. During bright days, sunglasses that offer UVA and UVB defense are recommended.

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

Frequently asked questions

During September, Hals experiences an average high-temperature of 16.7°C (62.1°F) and a low-temperature of 11.3°C (52.3°F).

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

In Hals, in September, during 15.9 rainfall days, 36mm (1.42") of precipitation is typically accumulated.

In Hals, snow does not fall in May through September.

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

In Hals, Denmark, in September, the average water temperature is 16.3°C (61.3°F). Swimming in 16.3°C (61.3°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

In Hals, Denmark, the average day length in September is 12h and 46min.

In September, on the first day of the month, sunrise is at 06:22 and sunset at 20:15. On the last day of the month, in Hals, sunrise is at 07:21 and sunset at 18:55 CEST.

The average sunshine duration in September in Hals, Denmark, is 7.4h.

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe 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

19.9°C

16.7°C

12°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

16.1km/h

17km/h

18.5km/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

9.2

10.8

9.4

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Hals, Denmark

Average high temperature in September: 16.7°C

The warmest month (with the highest average high temperature) is July (20.4°C).
The month with the lowest average high temperature is January (2.9°C).

Average low temperature in September: 11.3°C

The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is February (-0.1°C).

Average pressure in September
Hals, Denmark

Average pressure in September: 1013.9mbar

The month with the highest atmospheric pressure is April (1015mbar).
The month with the lowest atmospheric pressure is December (1009mbar).

Average wind speed in September
Hals, Denmark

Average wind speed in September: 16.3km/h

The windiest month (with the highest average wind speed) is December (18.3km/h).
The calmest month (with the lowest average wind speed) is June (14.7km/h).

Average humidity in September
Hals, Denmark

Average humidity in September: 79%

The months with the highest relative humidity are January, November and December (86%).
The months with the lowest relative humidity are April and May (73%).

Average rainfall in September
Hals, Denmark

Average rainfall in September: 36mm

The wettest month (with the highest rainfall) is August (55mm).
The driest month (with the least rainfall) is April (19mm).

Average rainfall days in September
Hals, Denmark

Average rainfall days in September: 15.9 days

The month with the highest number of rainy days is August (19.3 days).
The month with the least rainy days is February (10 days).

Average snowfall in September
Hals, Denmark

Average snowfall in September: 0mm

The month with the highest snowfall is January (64mm).
The months with the least snowfall are May, June, July, August and September (0mm).

Average snowfall days in September
Hals, Denmark

Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and February (8.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average sea temperature in September
Hals, Denmark

Average sea temperature in September: 16.3°C

The best month for swimming (with the highest average sea temperature) is August (18.3°C).
The coldest month (with the lowest average sea temperature) is March (2.9°C).

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

Average daylight in September: 12h and 48min

The month with the longest days is June (Average daylight: 17h and 48min).
The month with the shortest days is December (Average daylight: 6h and 48min).

Average sunshine in September: 7h and 24min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).

Average sunshine days in September
Hals, Denmark

Average sunshine days in September: 10.8 days

The month with the most sunshine days is April (14.9 days).
The month with the least sunshine days is November (8.8 days).

Average UV index in September
Hals, Denmark

Average UV index in September: 4

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

Average cloud cover in September
Hals, Denmark

Average cloud cover in September: 49

The months with the most cloud cover are February, November and December (Cloud cover 67).
The months with the least cloud cover are June and July (Cloud cover 41).

Average visibility in September
Hals, Denmark

Average visibility in September: 9km

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