September weather forecastHirtshals, Denmark
September
Weather in September
September bids farewell to summer, greeting autumn with crisp winds and warm colors. Remarkably, September witnesses a significant decrease in the average high temperature to 16.2°C (61.2°F). Preliminary signs of autumn become obvious with the falling leaves and the shortening daylight hours. While rainfall events occur, they seldom disrupt the tranquillity of visiting Hirtshals's serene landscapes under orange-tinted skies. Lower temperatures also affect sea creatures, thus affecting marine activities.Temperature
During the shift to September, a minor reduction in average high-temperature is observed, shifting from an enjoyable 19.2°C (66.6°F) in August to a still refreshing 16.2°C (61.2°F). In Hirtshals, the nighttime temperature shows a slight difference from the daytime high, averaging to a cool 12°C (53.6°F) during September.Humidity
In September, the average relative humidity in Hirtshals is 78%.Rainfall
In Hirtshals, Denmark, during September, the rain falls for 13.8 days and regularly aggregates up to 29mm (1.14") of precipitation. In Hirtshals, during the entire year, the rain falls for 155.3 days and collects up to 401mm (15.79") of precipitation.Snowfall
In Hirtshals, snow does not fall in May through September.Sea temperature
In September, the average sea temperature is 15.8°C (60.4°F).Note: Swimming is not a pleasant activity for most when the water temperature is 15.8°C (60.4°F). As the water temperature drops from 21°C (69.8°F) to 15°C (59°F), breathing becomes more difficult to control.
Daylight
In Hirtshals, the average length of the day in September is 12h and 47min.On the first day of September in Hirtshals, sunrise is at 06:22 and sunset at 20:17. On the last day of the month, sunrise is at 07:23 and sunset at 18:56 CEST.
Sunshine
In September, the average sunshine is 7.4h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
Average humidity in September
Hirtshals, Denmark
- Average humidity in September: 78%
The months with the highest relative humidity are January, February and November (84%).
The months with the lowest relative humidity are April and May (73%).
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).
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).
Average snowfall in September
Hirtshals, Denmark
- Average snowfall in September: 0mm
The month with the highest snowfall is January (48mm).
The months with the least snowfall are May, June, July, August and September (0mm).
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).
The months with the least snowfall days are May, June, July, August and September (0 days).
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).
Average daylight in September /
Average sunshine in September
Hirtshals, Denmark
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 17h and 54min).
The month with the shortest days is December (Average daylight: 6h and 42min).
- Average sunshine in September: 7h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 0min).
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).
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).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
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).
Average visibility in September
Hirtshals, 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).
