September weather forecastNy Hellesund, Norway
September
Weather in September
The first month of the autumn, September, is also a moderate month in Ny Hellesund, Norway, with temperature in the range of an average low of 12.2°C (54°F) and an average high of 15.1°C (59.2°F).Temperature
September commences with an average high-temperature of a mild 15.1°C (59.2°F), showing little deviation from August's 17.7°C (63.9°F). Ny Hellesund's nighttime temperatures in September see a subtle dip to an average of 12.2°C (54°F).Humidity
In September, the average relative humidity is 79%.Rainfall
In Ny Hellesund, in September, it is raining for 15.6 days, with typically 55mm (2.17") of accumulated precipitation. Throughout the year, there are 163.5 rainfall days, and 624mm (24.57") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 48min.On the first day of September in Ny Hellesund, sunrise is at 06:29 and sunset at 20:27. On the last day of the month, sunrise is at 07:31 and sunset at 19:05 CEST.
Sunshine
The average sunshine in September is 7.6h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. It's recommended to limit sun exposure when its radiation is at its peak during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ny Hellesund, Norway
- Average high temperature in September: 15.1°C
The warmest month (with the highest average high temperature) is July (17.8°C).
The month with the lowest average high temperature is February (2.6°C).
- Average low temperature in September: 12.2°C
The month with the highest average low temperature is August (14.3°C).
The coldest month (with the lowest average low temperature) is February (0.2°C).
Average pressure in September
Ny Hellesund, Norway
- Average pressure in September: 1013.1mbar
The month with the highest atmospheric pressure is April (1014.8mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in September
Ny Hellesund, Norway
- Average wind speed in September: 22.7km/h
The windiest month (with the highest average wind speed) is January (26.7km/h).
The calmest month (with the lowest average wind speed) is June (19.8km/h).
Average humidity in September
Ny Hellesund, Norway
- Average humidity in September: 79%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are May and June (74%).
Average rainfall in September
Ny Hellesund, Norway
- Average rainfall in September: 55mm
The wettest month (with the highest rainfall) is December (70mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in September
Ny Hellesund, Norway
- Average rainfall days in September: 15.6 days
The month with the highest number of rainy days is November (19.3 days).
The month with the least rainy days is January (10.9 days).
Average snowfall in September
Ny Hellesund, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is February (59mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Ny Hellesund, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Ny Hellesund, Norway
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 6min).
The month with the shortest days is December (Average daylight: 6h and 36min).
- Average sunshine in September: 7h and 36min
The month with the most sunshine is June (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 2h and 54min).
Average sunshine days in September
Ny Hellesund, Norway
- Average sunshine days in September: 11.2 days
The month with the most sunshine days is May (17.9 days).
The month with the least sunshine days is November (7.3 days).
Average UV index in September
Ny Hellesund, 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
Ny Hellesund, Norway
- Average cloud cover in September: 46
The month with the most cloud cover is November (Cloud cover 66).
The month with the least cloud cover is June (Cloud cover 36).
Average visibility in September
Ny Hellesund, 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).
