September weather forecastØystese, Norway
September
Weather in September
The first month of the autumn, September, is also a fresh month in Øystese, Norway, with an average temperature fluctuating between 11.6°C (52.9°F) and 6.6°C (43.9°F).Temperature
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a mild 14.9°C (58.8°F) to a fresh 11.6°C (52.9°F). Nighttime temperature reflects an average dip to a chilly 6.6°C (43.9°F) in September, subtly cooler than its daytime highs.Humidity
The average relative humidity in September is 84%.Rainfall
In Øystese, during September, the rain falls for 20.2 days and regularly aggregates up to 169mm (6.65") of precipitation. Throughout the year, there are 174.2 rainfall days, and 2062mm (81.18") of precipitation is accumulated.Snowfall
Months with snowfall in Øystese, Norway, are January through July, September through December. September is the first month it typically snows in Øystese. Throughout September, in the average 0.7 snowfall days, it receives 18mm (0.71") of snow. Throughout the year, there are 125.8 snowfall days, and 6228mm (245.2") of snow is accumulated.Sea temperature
In Øystese, in September, the average water temperature is 14.6°C (58.3°F).Note: Swimming at temperatures less than 10°C (50°F) in 14.6°C (58.3°F) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. A quick swim at 13°C (55.4°F) without adequate warmth can be discomforting.
Daylight
The average length of the day in September is 12h and 52min.On the first day of September in Øystese, sunrise is at 06:30 and sunset at 20:39. On the last day of the month, sunrise is at 07:39 and sunset at 19:10 CEST.
Sunshine
The average sunshine in September in Øystese, Norway, is 5.2h.UV index
The average daily maximum UV index in September is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, a daily maximum UV index of 2 leads to the following instructions:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Øystese, Norway
- Average high temperature in September: 11.6°C
The warmest month (with the highest average high temperature) is July (15.4°C).
The month with the lowest average high temperature is January (-2°C).
- Average low temperature in September: 6.6°C
The month with the highest average low temperature is August (8.9°C).
The coldest month (with the lowest average low temperature) is February (-6.5°C).
Average pressure in September
Øystese, Norway
- Average pressure in September: 1012.1mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1006.2mbar).
Average wind speed in September
Øystese, Norway
- Average wind speed in September: 10.2km/h
The windiest month (with the highest average wind speed) is January (12.5km/h).
The calmest month (with the lowest average wind speed) is August (8.3km/h).
Average humidity in September
Øystese, Norway
- Average humidity in September: 84%
The month with the highest relative humidity is March (90%).
The month with the lowest relative humidity is June (77%).
Average rainfall in September
Øystese, Norway
- Average rainfall in September: 169mm
The wettest month (with the highest rainfall) is December (283mm).
The driest month (with the least rainfall) is June (95mm).
Average rainfall days in September
Øystese, Norway
- Average rainfall days in September: 20.2 days
The month with the highest number of rainy days is August (23 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in September
Øystese, Norway
- Average snowfall in September: 18mm
The month with the highest snowfall is January (1273mm).
The month with the least snowfall is August (0mm).
Average snowfall days in September
Øystese, Norway
- Average snowfall days in September: 0.7 days
The month with the highest number of snowfall days is March (22.3 days).
The month with the least snowfall days is August (0 days).
Average sea temperature in September
Øystese, Norway
- Average sea temperature in September: 14.6°C
The best month for swimming (with the highest average sea temperature) is August (15.9°C).
The coldest month (with the lowest average sea temperature) is March (4.8°C).
Average daylight in September /
Average sunshine in September
Øystese, Norway
- Average daylight in September: 12h and 54min
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: 5h and 12min
The month with the most sunshine is June (Average sunshine: 8h and 24min).
The month with the least sunshine is December (Average sunshine: 1h and 54min).
Average sunshine days in September
Øystese, Norway
- Average sunshine days in September: 7.9 days
The months with the most sunshine days are April and May (11.1 days).
The month with the least sunshine days is December (6.1 days).
Average UV index in September
Øystese, Norway
- Average UV index in September: 2
The month with the highest UV index is June (UV index 4).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).
Average cloud cover in September
Øystese, Norway
- Average cloud cover in September: 64
The month with the most cloud cover is December (Cloud cover 72).
The months with the least cloud cover are May and June (Cloud cover 56).
Average visibility in September
Øystese, Norway
- Average visibility in September: 8km
The months with the highest visibility are June and August (9km).
The months with the lowest visibility are January, February, March and December (7km).
