September weather forecastMoss, Norway
September
Weather in September
September marks the beginning of autumn, with noticeable changes in weather conditions and a dip in temperatures. Rainfall reaches 44mm (1.73") across 10.5 rainy days. A decrease in daylight hours and temperature marks the seasonal transition as summer gives way to autumn. Evening strolls under deciduous canopies transformed by fall colours become particularly pleasant. The weather in September creates a sublime environment, perfect for sightseeing and photography in Moss, Norway.Temperature
With the onset of September, Moss's average high-temperature slightly adjusts, moderately receding from August's enjoyable 18.7°C (65.7°F) to a mild 15.3°C (59.5°F). Moss records an average nighttime low of 9.6°C (49.3°F) in September.Humidity
In September, the average relative humidity in Moss is 78%.Rainfall
In Moss, in September, during 10.5 rainfall days, 44mm (1.73") of precipitation is typically accumulated. Throughout the year, in Moss, Norway, there are 117.6 rainfall days, and 433mm (17.05") of precipitation is accumulated.Snowfall
May through September are months without snowfall.Sea temperature
In Moss, in September, the average water temperature is 15.8°C (60.4°F).Note: For most individuals, swimming in 15.8°C (60.4°F) is not a pleasurable activity. Breathing becomes progressively more difficult as water temperature declines below 21°C (69.8°F).
Daylight
In Moss, Norway, the average length of the day in September is 12h and 50min.On the first day of September, sunrise is at 06:15 and sunset at 20:19. On the last day of the month, sunrise is at 07:21 and sunset at 18:52 CEST.
Sunshine
In September, the average sunshine in Moss is 8.2h.UV index
In Moss, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Moss, Norway
- Average high temperature in September: 15.3°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 (-0.4°C).
- Average low temperature in September: 9.6°C
The month with the highest average low temperature is July (12.8°C).
The coldest month (with the lowest average low temperature) is February (-4.5°C).
Average pressure in September
Moss, Norway
- Average pressure in September: 1012.7mbar
The month with the highest atmospheric pressure is April (1014.4mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Moss, Norway
- Average wind speed in September: 13.8km/h
The windiest month (with the highest average wind speed) is December (16.4km/h).
The calmest month (with the lowest average wind speed) is July (12.1km/h).
Average humidity in September
Moss, Norway
- Average humidity in September: 78%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April and May (71%).
Average rainfall in September
Moss, Norway
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is November (52mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in September
Moss, Norway
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in September
Moss, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is January (108mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Moss, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Moss, Norway
- Average sea temperature in September: 15.8°C
The best month for swimming (with the highest average sea temperature) is August (18.4°C).
The coldest month (with the lowest average sea temperature) is March (2.8°C).
Average daylight in September /
Average sunshine in September
Moss, 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 12min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Moss, Norway
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is April (20.2 days).
The month with the least sunshine days is November (14.5 days).
Average UV index in September
Moss, Norway
- 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, October, November and December (UV index 2).
Average cloud cover in September
Moss, Norway
- Average cloud cover in September: 42
The month with the most cloud cover is February (Cloud cover 60).
The months with the least cloud cover are June, July and August (Cloud cover 38).
Average visibility in September
Moss, Norway
- Average visibility in September: 9km
The months with the highest visibility are May and June (10km).
The months with the lowest visibility are January, February and March (8km).
