September weather forecastSiljan, Norway
September
Weather in September
September, the first month of the autumn in Siljan, is still a refreshing month, with an average temperature fluctuating between 8.8°C (47.8°F) and 14.7°C (58.5°F).Temperature
Siljan observes a small decrease in the average high-temperature with the arrival of September, falling from August's enjoyable 18.7°C (65.7°F) to a mild 14.7°C (58.5°F). September brings an average low-temperature of 8.8°C (47.8°F) to Siljan.Humidity
In Siljan, the average relative humidity in September is 79%.Rainfall
In Siljan, during September, the rain falls for 13.4 days and regularly aggregates up to 68mm (2.68") of precipitation. In Siljan, during the entire year, the rain falls for 142.3 days and collects up to 756mm (29.76") of precipitation.Snowfall
In Siljan, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 50min.On the first day of September in Siljan, sunrise is at 06:19 and sunset at 20:22. On the last day of the month, sunrise is at 07:25 and sunset at 18:56 CEST.
Sunshine
In Siljan, Norway, the average sunshine in September is 7.8h.UV index
In Siljan, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 3 in September converts into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Siljan, Norway
- Average high temperature in September: 14.7°C
The warmest month (with the highest average high temperature) is July (19.7°C).
The month with the lowest average high temperature is January (-0.7°C).
- Average low temperature in September: 8.8°C
The month with the highest average low temperature is July (11.8°C).
The coldest month (with the lowest average low temperature) is February (-4.7°C).
Average pressure in September
Siljan, Norway
- Average pressure in September: 1012.7mbar
The month with the highest atmospheric pressure is April (1014.5mbar).
The month with the lowest atmospheric pressure is December (1007.9mbar).
Average wind speed in September
Siljan, Norway
- Average wind speed in September: 12.7km/h
The windiest month (with the highest average wind speed) is December (14.5km/h).
The calmest month (with the lowest average wind speed) is August (10.7km/h).
Average humidity in September
Siljan, Norway
- Average humidity in September: 79%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (69%).
Average rainfall in September
Siljan, Norway
- Average rainfall in September: 68mm
The wettest month (with the highest rainfall) is November (85mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in September
Siljan, Norway
- Average rainfall days in September: 13.4 days
The months with the highest number of rainy days are July and August (16.7 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in September
Siljan, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is January (302mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Siljan, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Siljan, Norway
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is June (Average sunshine: 11h and 6min).
The months with the least sunshine are January and December (Average sunshine: 3h and 24min).
Average sunshine days in September
Siljan, Norway
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is April (17.9 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in September
Siljan, Norway
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Siljan, Norway
- Average cloud cover in September: 45
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in September
Siljan, Norway
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February and March (8km).
