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
The average high-temperature during September registers at a mild 15.8°C (60.4°F), closely corresponding to the preceding month. An average nighttime temperature of 12.7°C (54.9°F) marks September.Humidity
In September, the average relative humidity is 78%.Rainfall
In Öckerö, during September, the rain falls for 11.2 days and regularly aggregates up to 16mm (0.63") of precipitation. In Öckerö, during the entire year, the rain falls for 123.7 days and collects up to 186mm (7.32") of precipitation.Snowfall
April through October are months without snowfall in Öckerö.Sea temperature
In September, the average sea temperature is 16.1°C (61°F).Note: Swimming in 16.1°C (61°F) is not a pleasurable activity for the majority of people. Breathing becomes increasingly challenging as water temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day in Öckerö is 12h and 47min.On the first day of September, sunrise is at 06:15 and sunset at 20:11. On the last day of the month, sunrise is at 07:16 and sunset at 18:50 CEST.
Sunshine
The average sunshine in September is 8.1h.UV index
In Öckerö, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 4 in September translates into this advice:
Take necessary precautions - Suggestions to elude sunburn are provided. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What are September temperatures in Öckerö?
What is the average humidity in September in Öckerö?
How much does it rain in Öckerö in September?
When it does not snow in Öckerö?
How cold is the water in September in Öckerö?
How many hours of daylight does Öckerö have in September?
When is the sunrise / sunset in September in Öckerö?
How long on average sun shines in September in Öckerö?
What is the UV index reading in September in Öckerö?
Average temperature in September
Öckerö, Sweden
- Average high temperature in September: 15.8°C
The warmest month (with the highest average high temperature) is July (18.5°C).
The month with the lowest average high temperature is February (1.8°C).
- Average low temperature in September: 12.7°C
The month with the highest average low temperature is August (15.3°C).
The coldest month (with the lowest average low temperature) is February (-0.3°C).
Average pressure in September
Öckerö, Sweden
- Average pressure in September: 1013.7mbar
The month with the highest atmospheric pressure is April (1014.7mbar).
The month with the lowest atmospheric pressure is December (1008.8mbar).
Average wind speed in September
Öckerö, Sweden
- Average wind speed in September: 22.6km/h
The windiest month (with the highest average wind speed) is December (27km/h).
The calmest month (with the lowest average wind speed) is June (18.4km/h).
Average humidity in September
Öckerö, Sweden
- Average humidity in September: 78%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Öckerö, Sweden
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is August (21mm).
The driest month (with the least rainfall) is April (8mm).
Average rainfall days in September
Öckerö, Sweden
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is August (13.6 days).
The month with the least rainy days is February (7.7 days).
Average snowfall in September
Öckerö, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is January (12mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Öckerö, Sweden
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average sea temperature in September
Öckerö, Sweden
- Average sea temperature in September: 16.1°C
The best month for swimming (with the highest average sea temperature) is August (18.5°C).
The coldest month (with the lowest average sea temperature) is March (2.6°C).
Average daylight in September /
Average sunshine in September
Öckerö, Sweden
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 0min).
The month with the shortest days is December (Average daylight: 6h and 42min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 18min).
The months with the least sunshine are January, February and November (Average sunshine: 3h and 42min).
Average sunshine days in September
Öckerö, Sweden
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is March (19.8 days).
The month with the least sunshine days is August (13.3 days).
Average UV index in September
Öckerö, Sweden
- 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
Öckerö, Sweden
- Average cloud cover in September: 45
The months with the most cloud cover are February and November (Cloud cover 62).
The month with the least cloud cover is June (Cloud cover 36).
Average visibility in September
Öckerö, Sweden
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
Öckerö, Sweden
Weather forecast for your location
2. Allow the app to use your location
