September weather forecastHellestø, Norway
September
Weather in September
September, the first month of the autumn in Hellestø, is still a refreshing month, with an average temperature fluctuating between 14.3°C (57.7°F) and 12.1°C (53.8°F).Temperature
With September's arrival, Hellestø notes an average high-temperature of a mild 14.3°C (57.7°F), closely following the trend of the preceding month. Maintaining close parity with daytime warmth, the average nocturnal temperature during September stays at a fresh 12.1°C (53.8°F).Humidity
In Hellestø, the average relative humidity in September is 79%.Rainfall
In Hellestø, during September, the rain falls for 19.3 days and regularly aggregates up to 112mm (4.41") of precipitation. Throughout the year, in Hellestø, there are 210.6 rainfall days, and 1013mm (39.88") of precipitation is accumulated.Snowfall
In Hellestø, Norway, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 49min.On the first day of the month, sunrise is at 06:37 and sunset at 20:38. On the last day of September, in Hellestø, sunrise is at 07:41 and sunset at 19:13 CEST.
Sunshine
In September, the average sunshine in Hellestø is 6.6h.UV index
In Hellestø, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The average daily UV index of 3 in September transforms into the following instructions:
Undertake precautions - It is suggested to shield oneself from sunburn. Direct Sun exposure should be minimized especially during midday when radiation is most intense. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hellestø, Norway
- Average high temperature in September: 14.3°C
The warmest month (with the highest average high temperature) is August (16.3°C).
The month with the lowest average high temperature is February (3.7°C).
- Average low temperature in September: 12.1°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is February (1.6°C).
Average pressure in September
Hellestø, Norway
- Average pressure in September: 1012.6mbar
The month with the highest atmospheric pressure is May (1015mbar).
The month with the lowest atmospheric pressure is December (1006.7mbar).
Average wind speed in September
Hellestø, Norway
- Average wind speed in September: 20.7km/h
The windiest month (with the highest average wind speed) is January (27.4km/h).
The calmest months (with the lowest average wind speed) are June and July (17.2km/h).
Average humidity in September
Hellestø, Norway
- Average humidity in September: 79%
The month with the highest relative humidity is July (81%).
The months with the lowest relative humidity are October and November (76%).
Average rainfall in September
Hellestø, Norway
- Average rainfall in September: 112mm
The wettest month (with the highest rainfall) is December (130mm).
The driest month (with the least rainfall) is June (43mm).
Average rainfall days in September
Hellestø, Norway
- Average rainfall days in September: 19.3 days
The month with the highest number of rainy days is December (21.5 days).
The month with the least rainy days is June (13.3 days).
Average snowfall in September
Hellestø, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is March (30mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Hellestø, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hellestø, Norway
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 18min).
The month with the shortest days is December (Average daylight: 6h and 24min).
- Average sunshine in September: 6h and 36min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 2h and 24min).
Average sunshine days in September
Hellestø, Norway
- Average sunshine days in September: 9.3 days
The month with the most sunshine days is June (14.4 days).
The month with the least sunshine days is December (5.8 days).
Average UV index in September
Hellestø, Norway
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Hellestø, Norway
- Average cloud cover in September: 53
The month with the most cloud cover is December (Cloud cover 64).
The month with the least cloud cover is May (Cloud cover 44).
Average visibility in September
Hellestø, Norway
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July and August (10km).
The months with the lowest visibility are January, February, March, September, October, November and December (9km).
