September weather forecastHerføl, Norway
September
Weather in September
The first month of the autumn, September, is still a mild month in Herføl, Norway, with an average temperature fluctuating between 11.5°C (52.7°F) and 15.2°C (59.4°F).Temperature
Herføl, Norway, observes a small decrease in the average high-temperature with the arrival of September, falling from August's comfortable 18.3°C (64.9°F) to a mild 15.2°C (59.4°F). An average low-temperature of 11.5°C (52.7°F) characterizes Herføl's September nights.Humidity
The average relative humidity in September in Herføl is 78%.Rainfall
In Herføl, in September, during 14.6 rainfall days, 52mm (2.05") of precipitation is typically accumulated. Throughout the year, in Herføl, there are 160.3 rainfall days, and 557mm (21.93") of precipitation is accumulated.Snowfall
In Herføl, Norway, snow does not fall in May through September.Daylight
In Herføl, Norway, the average length of the day in September is 12h and 50min.On the first day of the month, sunrise is at 06:14 and sunset at 20:16. On the last day of September, sunrise is at 07:19 and sunset at 18:51 CEST.
Sunshine
In September, the average sunshine is 8.2h.UV index
The average daily maximum UV index in September in Herføl, Norway, is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, a daily UV index of 4 turns into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Herføl, Norway
- Average high temperature in September: 15.2°C
The warmest month (with the highest average high temperature) is July (19°C).
The month with the lowest average high temperature is February (0.9°C).
- Average low temperature in September: 11.5°C
The months with the highest average low temperature are July and August (14.3°C).
The coldest month (with the lowest average low temperature) is February (-1.9°C).
Average pressure in September
Herføl, Norway
- Average pressure in September: 1013mbar
The month with the highest atmospheric pressure is April (1014.3mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Herføl, Norway
- Average wind speed in September: 19.1km/h
The windiest month (with the highest average wind speed) is December (22.2km/h).
The calmest month (with the lowest average wind speed) is June (16km/h).
Average humidity in September
Herføl, Norway
- Average humidity in September: 78%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is May (73%).
Average rainfall in September
Herføl, Norway
- Average rainfall in September: 52mm
The wettest month (with the highest rainfall) is August (71mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in September
Herføl, Norway
- Average rainfall days in September: 14.6 days
The month with the highest number of rainy days is August (17.8 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in September
Herføl, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is January (55mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Herføl, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Herføl, Norway
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 24min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 18min).
Average sunshine days in September
Herføl, Norway
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is April (17.3 days).
The month with the least sunshine days is December (10.8 days).
Average UV index in September
Herføl, Norway
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Herføl, Norway
- Average cloud cover in September: 42
The month with the most cloud cover is February (Cloud cover 62).
The months with the least cloud cover are June and July (Cloud cover 37).
Average visibility in September
Herføl, Norway
- 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).
