September weather forecastGrava, Norway
September
Weather in September
The first month of the autumn, September, is also a moderate month in Grava, Norway, with an average temperature varying between 9.3°C (48.7°F) and 15.3°C (59.5°F).Temperature
As August transitions into September, Grava sees a gentle drop in the average high-temperature, transitioning from a comfortable 18.7°C (65.7°F) to a moderate 15.3°C (59.5°F). During September, the average low-temperature is a chilly 9.3°C (48.7°F).Humidity
The average relative humidity in September in Grava, Norway, is 78%.Rainfall
In September, the rain falls for 10.6 days. Throughout September, 53mm (2.09") of precipitation is accumulated. Throughout the year, in Grava, there are 114.5 rainfall days, and 470mm (18.5") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Grava, Norway.Daylight
In Grava, the average length of the day in September is 12h and 50min.On the first day of the month, sunrise is at 06:19 and sunset at 20:22. On the last day of September, in Grava, Norway, sunrise is at 07:25 and sunset at 18:57 CEST.
Sunshine
In Grava, Norway, the average sunshine in September is 7.9h.UV index
The average daily maximum UV index in September in Grava is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the UV index of 3 transforms into the following advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. To guard against the harmful effects of the Sun, minimize exposure 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
Grava, Norway
- Average high temperature in September: 15.3°C
The warmest month (with the highest average high temperature) is July (19.4°C).
The month with the lowest average high temperature is January (-0.2°C).
- Average low temperature in September: 9.3°C
The month with the highest average low temperature is July (12.5°C).
The coldest month (with the lowest average low temperature) is February (-4°C).
Average pressure in September
Grava, Norway
- Average pressure in September: 1012.6mbar
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
Grava, Norway
- Average wind speed in September: 14km/h
The windiest month (with the highest average wind speed) is December (16.2km/h).
The calmest months (with the lowest average wind speed) are July and August (11.8km/h).
Average humidity in September
Grava, Norway
- Average humidity in September: 78%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Grava, Norway
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is November (57mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in September
Grava, Norway
- Average rainfall days in September: 10.6 days
The months with the highest number of rainy days are June and August (12.9 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in September
Grava, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is January (168mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Grava, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grava, 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: 7h and 54min
The month with the most sunshine is June (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).
Average sunshine days in September
Grava, Norway
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is April (20.5 days).
The month with the least sunshine days is February (14.7 days).
Average UV index in September
Grava, 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
Grava, Norway
- Average cloud cover in September: 44
The months with the most cloud cover are February and November (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in September
Grava, Norway
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The month with the lowest visibility is February (8km).
