Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
At the onset of September, Askøy records an average high-temperature of a moderate 14°C (57.2°F), showing little deviation from the preceding month. Askøy sees a minor drop to an average minimum temperature of 11.1°C (52°F) during the night in the month of September.Humidity
The average relative humidity in September is 79%.Rainfall
In Askøy, Norway, during September, the rain falls for 21.7 days and regularly aggregates up to 150mm (5.91") of precipitation. Throughout the year, in Askøy, there are 226.5 rainfall days, and 1565mm (61.61") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Askøy, Norway.Sea temperature
In September, the average sea temperature is 14.7°C (58.5°F).Note: Diving into 14.7°C (58.5°F) is practical below 10°C (50°F), given you're wearing protective swim gear; without it, expect a quick onset of cold shock and a struggle to breathe. Merely touching waters at 13°C (55.4°F) feels ice-cold.
Daylight
In September, the average length of the day is 12h and 53min.On the first day of the month, sunrise is at 06:34 and sunset at 20:43. On the last day of September, in Askøy, sunrise is at 07:44 and sunset at 19:14 CEST.
Sunshine
The average sunshine in September in Askøy, Norway, is 6.1h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
What is the average September temperature in Askøy?
What is the average humidity in September in Askøy?
How many days does it rain in September in Askøy?
When it does not snow in Askøy?
Does it snow in Askøy in September?
How cold is the water in September in Askøy?
How many hours of daylight does Askøy have in September?
When is the sunrise / sunset in September in Askøy?
How many hours of sunshine does Askøy have in September?
What is the UV index reading in September in Askøy?
Average temperature in September
Askøy, Norway
- Average high temperature in September: 14°C
The warmest month (with the highest average high temperature) is August (16.1°C).
The month with the lowest average high temperature is January (2.8°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is August (12.7°C).
The coldest month (with the lowest average low temperature) is February (0°C).
Average pressure in September
Askøy, Norway
- Average pressure in September: 1012mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1005.8mbar).
Average wind speed in September
Askøy, Norway
- Average wind speed in September: 16.4km/h
The windiest months (with the highest average wind speed) are January and December (21.1km/h).
The calmest month (with the lowest average wind speed) is June (13.6km/h).
Average humidity in September
Askøy, Norway
- Average humidity in September: 79%
The month with the highest relative humidity is March (81%).
The months with the lowest relative humidity are May and October (75%).
Average rainfall in September
Askøy, Norway
- Average rainfall in September: 150mm
The wettest month (with the highest rainfall) is October (201mm).
The driest month (with the least rainfall) is April (73mm).
Average rainfall days in September
Askøy, Norway
- Average rainfall days in September: 21.7 days
The month with the highest number of rainy days is August (22.2 days).
The month with the least rainy days is February (14.8 days).
Average snowfall in September
Askøy, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is January (127mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Askøy, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Askøy, Norway
- Average sea temperature in September: 14.7°C
The best month for swimming (with the highest average sea temperature) is August (15.7°C).
The coldest month (with the lowest average sea temperature) is March (4.8°C).
Average daylight in September /
Average sunshine in September
Askøy, Norway
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in September: 6h and 1min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 2h and 18min).
Average sunshine days in September
Askøy, Norway
- Average sunshine days in September: 7 days
The month with the most sunshine days is May (12 days).
The month with the least sunshine days is December (5.4 days).
Average UV index in September
Askøy, Norway
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Askøy, Norway
- Average cloud cover in September: 57
The month with the most cloud cover is December (Cloud cover 67).
The month with the least cloud cover is May (Cloud cover 47).
Average visibility in September
Askøy, Norway
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Askøy, Norway
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