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 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
In September, Kópasker experiences a minor shift in meteorological conditions with average high-temperatures marked at a frosty 8.8°C (47.8°F), closely mirroring the climate in August. During September, the nighttime temperatures align closely with the daytime averages, measuring 6.1°C (43°F).Humidity
In Kópasker, the average relative humidity in September is 82%.Rainfall
In Kópasker, in September, during 19.3 rainfall days, 67mm (2.64") of precipitation is typically accumulated. Throughout the year, there are 151 rainfall days, and 635mm (25") of precipitation is accumulated.Snowfall
Months with snowfall are January through July, September through December. September is the first month it typically snows. Throughout September, in the average 1.3 snowfall days, it receives 7mm (0.28") of snow. In Kópasker, Iceland, during the entire year, snow falls for 79.7 days and aggregates up to 632mm (24.88") of snow.Daylight
In September, the average length of the day is 13h and 7min.On the first day of September, sunrise is at 05:42 and sunset at 20:29. On the last day of the month, sunrise is at 07:15 and sunset at 18:35 GMT.
Sunshine
The average sunshine in September is 4.8h.UV index
The average daily maximum UV index in September in Kópasker is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the UV index of 2 transforms into the following advice:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
What is the average September temperature in Kópasker?
What is the average humidity in September in Kópasker?
How many days does it rain in September in Kópasker?
When does it start to snow in Kópasker?
What is the average length of the day in September in Kópasker?
When are sunrise and sunset in September in Kópasker?
How many hours of sunshine does Kópasker have in September?
What is the UV index reading in September in Kópasker?
Average temperature in September
Kópasker, Iceland
- Average high temperature in September: 8.8°C
The warmest month (with the highest average high temperature) is August (10.6°C).
The month with the lowest average high temperature is March (1.1°C).
- Average low temperature in September: 6.1°C
The month with the highest average low temperature is August (8.2°C).
The coldest month (with the lowest average low temperature) is March (-1.9°C).
Average pressure in September
Kópasker, Iceland
- Average pressure in September: 1003.4mbar
The month with the highest atmospheric pressure is June (1014.7mbar).
The month with the lowest atmospheric pressure is January (998.7mbar).
Average wind speed in September
Kópasker, Iceland
- Average wind speed in September: 23.7km/h
The windiest month (with the highest average wind speed) is December (31.4km/h).
The calmest month (with the lowest average wind speed) is June (17.9km/h).
Average humidity in September
Kópasker, Iceland
- Average humidity in September: 82%
The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are May and December (80%).
Average rainfall in September
Kópasker, Iceland
- Average rainfall in September: 67mm
The wettest month (with the highest rainfall) is December (77mm).
The driest month (with the least rainfall) is June (24mm).
Average rainfall days in September
Kópasker, Iceland
- Average rainfall days in September: 19.3 days
The month with the highest number of rainy days is September (19.3 days).
The month with the least rainy days is March (8.2 days).
Average snowfall in September
Kópasker, Iceland
- Average snowfall in September: 7mm
The month with the highest snowfall is March (113mm).
The month with the least snowfall is August (0mm).
Average snowfall days in September
Kópasker, Iceland
- Average snowfall days in September: 1.3 days
The month with the highest number of snowfall days is March (13.3 days).
The month with the least snowfall days is August (0 days).
Average daylight in September /
Average sunshine in September
Kópasker, Iceland
- Average daylight in September: 13h and 1min
The month with the longest days is May (Average daylight: 19h and 30min).
The month with the shortest days is December (Average daylight: 2h and 54min).
- Average sunshine in September: 4h and 5min
The month with the most sunshine is May (Average sunshine: 6h and 48min).
The month with the least sunshine is June (Average sunshine: 0h and 24min).
Average sunshine days in September
Kópasker, Iceland
- Average sunshine days in September: 7.8 days
The month with the most sunshine days is June (14.6 days).
The month with the least sunshine days is February (5.8 days).
Average UV index in September
Kópasker, Iceland
- Average UV index in September: 2
The months with the highest UV index are July and August (UV index 3).
The months with the lowest UV index are January, February, March, October and December (UV index 1).
Average cloud cover in September
Kópasker, Iceland
- Average cloud cover in September: 66
The month with the most cloud cover is March (Cloud cover 74).
The month with the least cloud cover is June (Cloud cover 60).
Average visibility in September
Kópasker, Iceland
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, November and December (8km).
Kópasker, Iceland
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