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
September
Weather in September
Temperature
The arrival of September denotes a barely perceptible change in the average high-temperatures to a chilly 8.3°C (46.9°F) from August's 11.2°C (52.2°F). Throughout the nights in September, Svínavatn notes an average low of 4.4°C (39.9°F), a small dip from the daytime peak.Humidity
In Svínavatn, the average relative humidity in September is 82%.Rainfall
The month with the most rainfall is September, when the rain falls for 14.3 days and typically aggregates up to 43mm (1.69") of precipitation.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 2 snowfall days, it receives 22mm (0.87") of snow. Throughout the year, there are 68.6 snowfall days, and 513mm (20.2") of snow is accumulated.Daylight
The average length of the day in September is 13h and 4min.On the first day of the month, sunrise is at 05:59 and sunset at 20:40. On the last day of September, in Svínavatn, sunrise is at 07:29 and sunset at 18:50 GMT.
Sunshine
In Svínavatn, the average sunshine in September is 4.9h.UV index
In September, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 2 during September translates into the following directions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Svínavatn in September?
What is the average humidity in September?
What is the rainiest month?
How much does it rain in September?
When does it start snowing?
How many hours of daylight does Svínavatn have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Svínavatn, Iceland
- Average high temperature in September: 8.3°C
The warmest month (with the highest average high temperature) is July (11.8°C).
The month with the lowest average high temperature is December (-0.5°C).
- Average low temperature in September: 4.4°C
The month with the highest average low temperature is July (7.4°C).
The coldest month (with the lowest average low temperature) is December (-4°C).
Average pressure in September
Svínavatn, Iceland
- Average pressure in September: 1003.5mbar
The month with the highest atmospheric pressure is June (1014.4mbar).
The month with the lowest atmospheric pressure is January (998mbar).
Average wind speed in September
Svínavatn, Iceland
- Average wind speed in September: 17.3km/h
The windiest month (with the highest average wind speed) is December (21.9km/h).
The calmest month (with the lowest average wind speed) is July (13.9km/h).
Average humidity in September
Svínavatn, Iceland
- Average humidity in September: 82%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are May and June (75%).
Average rainfall in September
Svínavatn, Iceland
- Average rainfall in September: 43mm
The wettest month (with the highest rainfall) is September (43mm).
The driest month (with the least rainfall) is June (15mm).
Average rainfall days in September
Svínavatn, Iceland
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is September (14.3 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in September
Svínavatn, Iceland
- Average snowfall in September: 22mm
The month with the highest snowfall is January (106mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Svínavatn, Iceland
- Average snowfall days in September: 2 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are July and August (0.1 days).
Average daylight in September /
Average sunshine in September
Svínavatn, Iceland
- Average daylight in September: 13h and 1min
The month with the longest days is June (Average daylight: 22h and 24min).
The month with the shortest days is December (Average daylight: 3h and 30min).
- Average sunshine in September: 4h and 5min
The month with the most sunshine is May (Average sunshine: 8h and 0min).
The month with the least sunshine is June (Average sunshine: 0h and 42min).
Average sunshine days in September
Svínavatn, Iceland
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is June (15.8 days).
The month with the least sunshine days is April (11.8 days).
Average UV index in September
Svínavatn, Iceland
- Average UV index in September: 2
The months with the highest UV index are May, June and July (UV index 3).
The months with the lowest UV index are March, October, November and December (UV index 1).
Average cloud cover in September
Svínavatn, Iceland
- Average cloud cover in September: 64
The month with the most cloud cover is March (Cloud cover 67).
The month with the least cloud cover is June (Cloud cover 55).
Average visibility in September
Svínavatn, 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, April, May, July, August, September, October, November and December (9km).
