September weather forecastHólar, Iceland
September
Weather in September
The first month of the autumn, September, is still a chilly month in Hólar, Iceland, with an average temperature fluctuating between 4°C (39.2°F) and 8°C (46.4°F).Temperature
September reports an average high-temperature of a frosty 8°C (46.4°F), slightly varied from August's 10.8°C (51.4°F). In Hólar, the nocturnal temperatures throughout September show a marginal dip from the daytime averages, settling at an icy 4°C (39.2°F).Humidity
In September, the average relative humidity in Hólar is 82%.Rainfall
September is the month with the most rainfall. Rain falls for 19.3 days and accumulates 76mm (2.99") of precipitation.Snowfall
January through December are months with snowfall in Hólar, Iceland. In Hólar, in September, snow falls for 2.5 days, with typically accumulated 54mm (2.13") of snow. Throughout the year, there are 100.6 snowfall days, and 1112mm (43.78") of snow is accumulated.Daylight
In September, the average length of the day is 13h and 5min.On the first day of the month, sunrise is at 05:55 and sunset at 20:37. On the last day of September, sunrise is at 07:25 and sunset at 18:46 GMT.
Sunshine
In Hólar, the average sunshine in September is 5.3h.UV index
The average daily maximum UV index in September is 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 2 suggests these recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hólar, Iceland
- Average high temperature in September: 8°C
The warmest month (with the highest average high temperature) is July (11.6°C).
The month with the lowest average high temperature is December (-1.3°C).
- Average low temperature in September: 4°C
The month with the highest average low temperature is July (6.9°C).
The coldest month (with the lowest average low temperature) is December (-4.7°C).
Average pressure in September
Hólar, 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 (998.3mbar).
Average wind speed in September
Hólar, Iceland
- Average wind speed in September: 15.7km/h
The windiest month (with the highest average wind speed) is December (20.3km/h).
The calmest month (with the lowest average wind speed) is July (11.7km/h).
Average humidity in September
Hólar, Iceland
- Average humidity in September: 82%
The months with the highest relative humidity are January, February and March (85%).
The month with the lowest relative humidity is June (74%).
Average rainfall in September
Hólar, Iceland
- Average rainfall in September: 76mm
The wettest month (with the highest rainfall) is September (76mm).
The driest month (with the least rainfall) is June (23mm).
Average rainfall days in September
Hólar, 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 February (9.3 days).
Average snowfall in September
Hólar, Iceland
- Average snowfall in September: 54mm
The month with the highest snowfall is January (213mm).
The month with the least snowfall is July (1mm).
Average snowfall days in September
Hólar, Iceland
- Average snowfall days in September: 2.5 days
The month with the highest number of snowfall days is March (16.3 days).
The month with the least snowfall days is July (0.1 days).
Average daylight in September /
Average sunshine in September
Hólar, Iceland
- Average daylight in September: 13h and 6min
The month with the longest days is July (Average daylight: 20h and 36min).
The month with the shortest days is December (Average daylight: 3h and 24min).
- Average sunshine in September: 5h and 18min
The month with the most sunshine is May (Average sunshine: 8h and 54min).
The month with the least sunshine is June (Average sunshine: 0h and 36min).
Average sunshine days in September
Hólar, Iceland
- Average sunshine days in September: 7 days
The month with the most sunshine days is June (13.4 days).
The month with the least sunshine days is September (7 days).
Average UV index in September
Hólar, 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 and November (UV index 1).
Average cloud cover in September
Hólar, Iceland
- Average cloud cover in September: 61
The month with the most cloud cover is March (Cloud cover 64).
The month with the least cloud cover is June (Cloud cover 51).
Average visibility in September
Hólar, Iceland
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, March and December (8km).
